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  Chromista
      Heterokontophyta
            Bacillariophyceae
                   [Bacillariophyta]
                    Cymbellales
                            Cymbellaceae
                                     Afrocymbella
                                             Afrocymbella aschersonii
                                                   [Gomphocymbella aschersonii]
                                                   [Gomphonema aschersonii]
                                             Afrocymbella beccarii
                                                   [Caloneis vandermerwei]
                                                   [Cymbella beccarii]
                                                   [Gomphocymbella beccari]
                                                   [Gomphocymbella bruni]
                                                   [Gomphonema bruni]
                                             Afrocymbella gracilis
                                                   [Gomphocymbella gracilis]
                                             Afrocymbella kociolekii
                                             Afrocymbella muelleri
                                                   [Gomphocymbella muelleri]
                                               Afrocymbella muelleri var. acuminata
                                             Afrocymbella pergracilis
                                             Afrocymbella reichardtii
                                               Afrocymbella reichardtii var. procera
                                             Afrocymbella tanganyikae
                                                   [Gomphocymbella tanganyikae]
                                     Brebissonia
                                             Brebissonia boeckii
                                             Brebissonia lanceolata
                                             Brebissonia weissflogii
                                     Cymbella
                                             Cymbella abbottii
                                             Cymbella abnormalis
                                               Cymbella abnormalis var. antiqua
                                             Cymbella abnormis
                                               Cymbella abnormis var. fossilis
                                             Cymbella aculeata
                                             Cymbella acuta
                                                   [Echinella acuta]
                                                   [Frustulia acuta]
                                                   Cymbella acuta f. baicalensis
                                               Cymbella acuta var. minor
                                             Cymbella acutea
                                             Cymbella acutiuscula
                                                   Cymbella acutiuscula f. minor
                                               Cymbella acutiuscula var. minor
                                             Cymbella adnata
                                             Cymbella advena
                                             Cymbella aequalis
                                                   Cymbella aequalis f. ceylonica
                                                   Cymbella aequalis f. undulata
                                               Cymbella aequalis var. alaskaensis
                                               Cymbella aequalis var. florentinoides
                                               Cymbella aequalis var. fossilis
                                               Cymbella aequalis var. genuina
                                               Cymbella aequalis var. hybrida
                                               Cymbella aequalis var. lapponica
                                               Cymbella aequalis var. pisciculus
                                             Cymbella aequaloides
                                             Cymbella affiniformis
                                             Cymbella affinis
                                               Cymbella affinis var. elegans
                                               Cymbella affinis var. g
                                               Cymbella affinis var. leptoceras
                                               Cymbella affinis var. obesa
                                               Cymbella affinis var. procera
                                               Cymbella affinis var. tumida
                                             Cymbella alaskana
                                             Cymbella algida
                                             Cymbella alpestris
                                             Cymbella alpina
                                                   Cymbella alpina f. intermedia
                                                   Cymbella alpina f. minor
                                                   Cymbella alpina f. nipponica
                                                   Cymbella alpina f. variabilis
                                               Cymbella alpina var. minuta
                                             Cymbella alpinoides
                                             Cymbella amelieana
                                             Cymbella americana
                                               Cymbella americana var. ljungneri
                                             Cymbella amoyensis
                                             Cymbella amphicephala
                                               Cymbella amphicephala var. genuina
                                               Cymbella amphicephala var. intermedia
                                               Cymbella amphicephala var. jeniseyensis
                                               Cymbella amphicephala var. parva
                                               Cymbella amphicephala var. subundulata
                                               Cymbella amphicephala var. unipunctata
                                               Cymbella amphicephala var. variostriata
                                             Cymbella amphioxys
                                                   [Navicula amphioxys]
                                               Cymbella amphioxys var. asiatica
                                               Cymbella amphioxys var. parallela
                                             Cymbella amplificata
                                                   [Cocconema cistula var. siberica]
                                                   [Cymbella cistula var. siberica 'sibirica']
                                                   [Cymbella stuxbergii var. intermedia]
                                                   [Cymbella stuxbergii var. siberica]
                                             Cymbella ampullacea
                                             Cymbella andranokelyna
                                             Cymbella anglica
                                               Cymbella anglica var. arverna
                                             Cymbella angustata
                                                   Cymbella angustata f. integra
                                                   Cymbella angustata f. minor
                                               Cymbella angustata var. diversistriata
                                               Cymbella angustata var. hinganica
                                               Cymbella angustata var. inaequilatera
                                               Cymbella angustata var. iriomotense
                                               Cymbella angustata var. latestriata
                                               Cymbella angustata var. pyrenaica
                                             Cymbella angustissima
                                             Cymbella ankobraensis
                                             Cymbella antarctica
                                             Cymbella antogaryanum
                                             Cymbella arakawana
                                             Cymbella arctica
                                                   [Cocconema arcticum]
                                                   [Cocconema variabilis var. arctica]
                                                   [Cymbella cistula var. arctica]
                                                   [Cymbella variabilis var. arctica]
                                             Cymbella arctissima
                                             Cymbella arcus
                                             Cymbella aspera
                                                   [Cocconema asperum]
                                                   [Cymbella lanceolata var. aspera]
                                                   [Frustulia gastroides]
                                                   Cymbella aspera f. baicalensis
                                               Cymbella aspera var. elongata
                                               Cymbella aspera var. fossilis
                                               Cymbella aspera var. gigantea
                                               Cymbella aspera var. gigas
                                               Cymbella aspera var. incerta
                                               Cymbella aspera var. intermedia
                                               Cymbella aspera var. manschurica
                                             Cymbella aubertii
                                             Cymbella aueri
                                             Cymbella australica
                                                   [Cocconema australicum]
                                                   [Cymbella tumida var. australica]
                                                   [Cymbella tumida var. gracilis]
                                                   Cymbella australica f. elongata
                                               Cymbella australica var. fossilis
                                               Cymbella australica var. hankensis
                                             Cymbella austriaca
                                                   Cymbella austriaca f. minor
                                               Cymbella austriaca var. alaskaensis
                                               Cymbella austriaca var. densestriata
                                               Cymbella austriaca var. erdoebenyiana
                                               Cymbella austriaca var. excisa
                                               Cymbella austriaca var. fossilis
                                               Cymbella austriaca var. latestriata
                                               Cymbella austriaca var. recta
                                               Cymbella austriaca var. reducta
                                               Cymbella austriaca var. regularis
                                               Cymbella austriaca var. robusta
                                               Cymbella austriaca var. semirecta
                                               Cymbella austriaca var. subrhomboidea
                                               Cymbella austriaca var. tumida
                                               Cymbella austriaca var. ventricosa
                                             Cymbella avenacea
                                             Cymbella baicalensis
                                               Cymbella baicalensis var. reinhardtii
                                             Cymbella balatonis
                                                   [Cymbella helvetica var. balatonis]
                                               Cymbella balatonis var. angustata
                                             Cymbella bastowii
                                             Cymbella batthyanyiana
                                             Cymbella beherei
                                             Cymbella behrei
                                             Cymbella bengalensis
                                                   [Cymbella aspera var. bengalensis]
                                             Cymbella bengaliformis
                                             Cymbella bernensis
                                             Cymbella beverleiana
                                             Cymbella bharatensis
                                             Cymbella bicapitata
                                             Cymbella bipartita
                                               Cymbella bipartita var. densestriata
                                             Cymbella bistritzae
                                             Cymbella blancheana
                                               Cymbella blancheana var. directa
                                             Cymbella boeckii
                                             Cymbella borapetensis
                                             Cymbella borealis
                                             Cymbella borgei
                                             Cymbella botellus
                                                   [Cymbella variabilis var. botellus]
                                             Cymbella bouleana
                                             Cymbella bourrellyi
                                             Cymbella brasiliana
                                             Cymbella brebissoniana
                                             Cymbella brevicostata
                                             Cymbella brevieri
                                             Cymbella breweriana
                                             Cymbella bruyanti
                                             Cymbella budayana
                                               Cymbella budayana var. gracilior
                                             Cymbella buechleri
                                             Cymbella calida
                                             Cymbella cantalense
                                             Cymbella cantonatii
                                             Cymbella capitata
                                                   Cymbella capitata f. minor
                                             Cymbella capitellata
                                             Cymbella capricornis
                                             Cymbella carassius
                                             Cymbella carenageana
                                             Cymbella cassidula
                                             Cymbella cayeuxi
                                             Cymbella ceaspitosum
                                               Cymbella ceaspitosum var. pediculus
                                             Cymbella cesati
                                                   Cymbella cesati f. minor
                                                   Cymbella cesati f. undulata
                                               Cymbella cesati var. asiatica
                                               Cymbella cesati var. linearis
                                             Cymbella cesatii
                                               Cymbella cesatii var. capitata
                                               Cymbella cesatii var. cesatii
                                             Cymbella chandolensis
                                             Cymbella charetoni
                                             Cymbella charrua
                                             Cymbella chasei
                                             Cymbella chyzerii
                                             Cymbella cimbebasiae
                                             Cymbella cistula
                                                   [Bacillaria cistula]
                                                   [Cocconema cistula var. maculata]
                                                   [Cymbella cistula var. maculata]
                                                   [Frustulia maculata]
                                                   Cymbella cistula f. abnormis
                                                   Cymbella cistula f. baicalensis
                                                   Cymbella cistula f. curta
                                                   Cymbella cistula f. gibbosa
                                                   Cymbella cistula f. minor
                                                   Cymbella cistula f. subrecta
                                                   Cymbella cistula f. truncata
                                               Cymbella cistula var. africana
                                               Cymbella cistula var. angustior
                                               Cymbella cistula var. arcuata
                                               Cymbella cistula var. asiatica
                                               Cymbella cistula var. baicalensis
                                               Cymbella cistula var. caldostagnensis
                                               Cymbella cistula var. capitata
                                               Cymbella cistula var. cistula
                                               Cymbella cistula var. eucistula
                                               Cymbella cistula var. fusidium
                                               Cymbella cistula var. genuflexa
                                               Cymbella cistula var. globosa
                                               Cymbella cistula var. hinganensis
                                               Cymbella cistula var. hungarica
                                               Cymbella cistula var. inflata
                                               Cymbella cistula var. insignis
                                               Cymbella cistula var. koreana
                                               Cymbella cistula var. major
                                               Cymbella cistula var. manschurica
                                               Cymbella cistula var. minor
                                               Cymbella cistula var. mutabunda
                                               Cymbella cistula var. siamense
                                               Cymbella cistula var. truncata
                                                     [Cymbella aspera var. truncata]
                                                     [Cymbella gastroides var. truncata]
                                               Cymbella cistula var. undulata
                                             Cymbella cistuliformis
                                             Cymbella cistuloides
                                               Cymbella cistuloides var. angulata
                                             Cymbella claasseniae
                                             Cymbella clausii
                                             Cymbella clementis
                                             Cymbella clericii
                                               Cymbella clericii var. andina
                                               Cymbella clericii var. aueri
                                             Cymbella cleve-eulerae
                                             Cymbella coamoensis
                                             Cymbella coffeaeformis
                                             Cymbella cognata
                                             Cymbella compacta
                                                   [Cymbella filarszkyi]
                                                   [Cymbella helvetica var. abbreviata]
                                                   [Cymbella helvetica var. compacta]
                                                   [Cymbella javorkae]
                                             Cymbella conifera
                                             Cymbella convexa
                                                   [Cymbella cistula var. convexa]
                                             Cymbella copulata
                                             Cymbella costata
                                             Cymbella coudertii
                                             Cymbella crassa
                                                   [Cymbella aspera var. crassa]
                                                   [Cymbella cistula var. crassa]
                                                   [Cymbella gastroides var. crassa]
                                             Cymbella crassistigmata
                                                   [Cymbella cistula var. gracilis]
                                             Cymbella creguti
                                             Cymbella criophila
                                             Cymbella cristata
                                             Cymbella cryptocephala
                                             Cymbella cucumis
                                             Cymbella cursiformis
                                             Cymbella curvata
                                             Cymbella cuspidata
                                                   Cymbella cuspidata f. apiculata
                                                   Cymbella cuspidata f. borealis
                                                   Cymbella cuspidata f. impressa
                                                   Cymbella cuspidata f. maxima
                                               Cymbella cuspidata var. acuta
                                               Cymbella cuspidata var. elliptica
                                               Cymbella cuspidata var. minor
                                               Cymbella cuspidata var. schulzii
                                             Cymbella cymbiformis
                                                   Cymbella cymbiformis f. excisa
                                                   Cymbella cymbiformis f. minor
                                               Cymbella cymbiformis var. bipunctata
                                               Cymbella cymbiformis var. consimilis
                                               Cymbella cymbiformis var. curvata
                                               Cymbella cymbiformis var. genuina
                                               Cymbella cymbiformis var. nonpunctata
                                               Cymbella cymbiformis var. parva
                                               Cymbella cymbiformis var. producta
                                               Cymbella cymbiformis var. stagnorum
                                               Cymbella cymbiformis var. subrhomboidea
                                             Cymbella dadwinensis
                                             Cymbella davidsonii
                                             Cymbella deblockii
                                             Cymbella delauneyi
                                             Cymbella delecta
                                             Cymbella delicatissima
                                               Cymbella delicatissima var. beagleana
                                             Cymbella delicatula
                                                   Cymbella delicatula f. lata
                                                   Cymbella delicatula f. obtusa
                                               Cymbella delicatula var. capitata
                                               Cymbella delicatula var. intermedia
                                             Cymbella deltaica
                                             Cymbella descripta
                                             Cymbella designata
                                                   [Cymbella leptoceros var. rostrata]
                                             Cymbella dianae
                                             Cymbella dicephala
                                             Cymbella difficilis
                                                   Cymbella difficilis f. capitata
                                             Cymbella digitataradiata
                                             Cymbella directa
                                             Cymbella disparestriata
                                             Cymbella diversa
                                             Cymbella diversiforamina
                                             Cymbella diversiformis
                                             Cymbella diversistigmata
                                             Cymbella dobsonensis
                                             Cymbella dorsenotata
                                               Cymbella dorsenotata var. subsalsa
                                             Cymbella dorsirostrata
                                                   [Cymbella excisa var. subcapitata]
                                             Cymbella dubia
                                             Cymbella dubitabilis
                                             Cymbella dubitata
                                             Cymbella dubravicensis
                                                   [Cymbella aspera var. dubravicensis]
                                                   [Cymbella gastroides var. dubravicensis]
                                             Cymbella dumbeana
                                             Cymbella duplopunctata
                                             Cymbella eburnea
                                             Cymbella edelbergii
                                             Cymbella ehrenbergii
                                                   Cymbella ehrenbergii f. baicalensis
                                                   Cymbella ehrenbergii f. orientalis
                                                   Cymbella ehrenbergii f. ornata
                                                   Cymbella ehrenbergii f. thermalis
                                                   Cymbella ehrenbergii f. ventricosa
                                               Cymbella ehrenbergii var. apiculata
                                               Cymbella ehrenbergii var. conica
                                               Cymbella ehrenbergii var. delecta
                                               Cymbella ehrenbergii var. elongata
                                               Cymbella ehrenbergii var. fossilis
                                               Cymbella ehrenbergii var. genuina
                                               Cymbella ehrenbergii var. hankensis
                                               Cymbella ehrenbergii var. hungarica
                                               Cymbella ehrenbergii var. inflata
                                               Cymbella ehrenbergii var. major
                                               Cymbella ehrenbergii var. naviculoides
                                               Cymbella ehrenbergii var. pumila
                                               Cymbella ehrenbergii var. stauroneiformis
                                               Cymbella ehrenbergii var. stigmatica
                                               Cymbella ehrenbergii var. subcuspidata
                                             Cymbella ehrenbergii (ehrenbergi)
                                             Cymbella elegans
                                             Cymbella elizabethana
                                             Cymbella elliptica
                                             Cymbella encyonema
                                             Cymbella epithemoides
                                             Cymbella erdmannensis
                                             Cymbella erdobenyiana
                                             Cymbella estonica
                                             Cymbella euricephala
                                             Cymbella eurycephala
                                             Cymbella excavata
                                             Cymbella excisa
                                                   [Cocconema excisum]
                                                   [Cocconema nanum]
                                                   [Cymbella affinis f. excisa (exisa)]
                                                   [Cymbella affinis var. excisa]
                                                   [Cymbella affinis var. ventriconcava]
                                                   [Cymbella nana]
                                                   [Encyonema ventricosum var. excisum]
                                                   Cymbella excisa f. major
                                                   Cymbella excisa f. typica
                                               Cymbella excisa var. angusta
                                               Cymbella excisa var. major
                                               Cymbella excisa var. procera
                                             Cymbella excisiformis
                                               Cymbella excisiformis var. nonprotracta
                                             Cymbella exigua
                                             Cymbella explanata
                                             Cymbella falaisensis
                                                   [Cymbella diavola]
                                                   [Encyonopsis falaisensis]
                                                   [Navicula falaisensis]
                                                   [Navicula iniqua]
                                                   [Schizonema falaisiense]
                                             Cymbella farakulumensis
                                             Cymbella fennica
                                             Cymbella fonticola
                                                   Cymbella fonticola f. dumbeana
                                             Cymbella fonticolaØ
                                             Cymbella fornicata
                                             Cymbella foucaudi
                                             Cymbella frenguellii
                                             Cymbella frieseana
                                             Cymbella frigida
                                             Cymbella fuegensis
                                             Cymbella fulva
                                             Cymbella fusidium
                                             Cymbella gadjiana
                                                   Cymbella gadjiana f. acuminata
                                             Cymbella gallaudi
                                             Cymbella gallica
                                               Cymbella gallica var. calcarea
                                               Cymbella gallica var. crassa
                                               Cymbella gallica var. curta
                                               Cymbella gallica var. gracilis
                                               Cymbella gallica var. minor
                                             Cymbella gastroides
                                                   Cymbella gastroides f. minor
                                               Cymbella gastroides subsp. substomatophora
                                               Cymbella gastroides var. genuina
                                               Cymbella gastroides var. prolongata
                                               Cymbella gastroides var. volvicense
                                             Cymbella gasumanni
                                             Cymbella geddiana
                                             Cymbella gemeinhardtii
                                             Cymbella geminata
                                             Cymbella gibba
                                             Cymbella gibberula
                                             Cymbella gibbosa
                                             Cymbella giluwensis
                                             Cymbella glacialis
                                             Cymbella gondwana
                                             Cymbella gonzalvesii
                                             Cymbella gracile
                                                   Cymbella gracile f. minima
                                             Cymbella graciliformis
                                             Cymbella gracilis
                                                   Cymbella gracilis f. biconfusa
                                                   Cymbella gracilis f. crassiostriata
                                                   Cymbella gracilis f. minor
                                                   Cymbella gracilis f. sphagnicola
                                               Cymbella gracilis var. arcuata
                                               Cymbella gracilis var. aurangabadensis
                                               Cymbella gracilis var. capitata
                                               Cymbella gracilis var. heterostriata
                                               Cymbella gracilis var. karelica
                                               Cymbella gracilis var. rotundata
                                               Cymbella gracilis var. scotica
                                             Cymbella gracillima
                                             Cymbella grata
                                             Cymbella gravida
                                             Cymbella gregorii
                                             Cymbella groenlandica
                                               Cymbella groenlandica var. alaskaensis
                                             Cymbella grossestriata
                                                   Cymbella grossestriata f. major
                                               Cymbella grossestriata var. curta
                                             Cymbella guettingeri
                                             Cymbella gutwinskii
                                               Cymbella gutwinskii var. intermedia
                                             Cymbella halophila
                                             Cymbella hantzschiana
                                                   [Cocconema pachycephalum]
                                                   [Cocconema robustum]
                                                   [Cocconema tumidum (tumida) var. pachycephalum]
                                                   [Frustulia cymbiformis]
                                               Cymbella hantzschiana var. borealis
                                               Cymbella hantzschiana var. strontiana
                                             Cymbella harioti
                                             Cymbella haslundii
                                             Cymbella hauckii
                                               Cymbella hauckii var. chilensis
                                               Cymbella hauckii var. fossilis
                                               Cymbella hauckii var. minor
                                             Cymbella hebetata
                                             Cymbella hebridica
                                               Cymbella hebridica var. apiculata
                                               Cymbella hebridica var. jeniseyensis
                                             Cymbella hedinii
                                             Cymbella heimii
                                             Cymbella helmandensis
                                             Cymbella helmckei
                                             Cymbella helvetica
                                                   [Cocconema helvetica]
                                                   [Cocconema helveticum]
                                                   [Cymbella cistula var. lacroixii]
                                                   [Cymbella gastroides var. helvetica]
                                                   [Cymbella helvetica f. major]
                                                   [Cymbella helvetica var. major]
                                                   [Cymbella lacroixii (lacroixi)]
                                                   [Cymbella rigida]
                                                   Cymbella helvetica f. ornata
                                                   Cymbella helvetica f. silesiaca
                                               Cymbella helvetica var. africana
                                               Cymbella helvetica var. curta
                                               Cymbella helvetica var. elongata
                                               Cymbella helvetica var. excisa
                                               Cymbella helvetica var. fossilis
                                               Cymbella helvetica var. gracilis
                                               Cymbella helvetica var. helvetica
                                               Cymbella helvetica var. incisa
                                               Cymbella helvetica var. maxima
                                               Cymbella helvetica var. punctata
                                               Cymbella helvetica var. scotica
                                               Cymbella helvetica var. signata
                                               Cymbella helvetica var. undulata
                                             Cymbella heterogibbosa
                                                   [Cymbella cistula var. gibbosa]
                                                   [Cymbella lanceolata var. gibbosa]
                                             Cymbella heteropleura
                                                   [Pinnularia heteropleura]
                                                   Cymbella heteropleura f. hinganica
                                                   Cymbella heteropleura f. minor
                                                   Cymbella heteropleura f. nipponica
                                               Cymbella heteropleura var. lanceolata
                                               Cymbella heteropleura var. typica
                                             Cymbella hevesensis
                                             Cymbella hillardii
                                             Cymbella hoelii
                                             Cymbella hofmanniae
                                             Cymbella holmenii
                                             Cymbella hopkirkii
                                             Cymbella hubeiensis
                                             Cymbella hugoni
                                             Cymbella hugonii
                                             Cymbella hulensis
                                               Cymbella hulensis var. certa
                                             Cymbella hungarica
                                                   [Cocconema hungaricum]
                                                   [Cymbella hungarica var. crassior]
                                                   [Cymbella hungarica var. grunowii]
                                                   [Cymbella hungarica var. signata]
                                                   [Cymbella parva var. hungarica]
                                                   Cymbella hungarica f. balatonis
                                             Cymbella hurelli
                                             Cymbella hustedtii
                                                   Cymbella hustedtii f. lineolata
                                               Cymbella hustedtii var. compacta
                                               Cymbella hustedtii var. crassipunctata
                                               Cymbella hustedtii var. rhombica
                                             Cymbella hyalina
                                             Cymbella hybrida
                                               Cymbella hybrida var. pamirica
                                               Cymbella hybrida var. sierra-leonensis
                                             Cymbella hybridiformis
                                             Cymbella imitans
                                               Cymbella imitans var. stratior
                                             Cymbella inca
                                             Cymbella incerta
                                                   Cymbella incerta f. robusta
                                               Cymbella incerta var. africana
                                               Cymbella incerta var. oblonga
                                               Cymbella incerta var. subconstricta
                                             Cymbella incertastriata
                                             Cymbella incrassata
                                             Cymbella incurvata
                                             Cymbella ineaqualis
                                             Cymbella inelegans
                                               Cymbella inelegans var. baikalensis
                                             Cymbella inflata
                                             Cymbella inflexa
                                             Cymbella ingstadii
                                             Cymbella intermedia
                                             Cymbella ioica
                                             Cymbella islandica
                                             Cymbella italica
                                             Cymbella jalgaonensis
                                             Cymbella janischii
                                                   [Cocconema janischii]
                                                   [Cymbella mexicana var. janischii]
                                             Cymbella javanica
                                               Cymbella javanica var. mengeae
                                             Cymbella jianghanensis
                                             Cymbella jimboi
                                             Cymbella jolmolungmensis
                                             Cymbella jonssoni
                                             Cymbella jordani
                                             Cymbella jordanii
                                             Cymbella kaingensis
                                             Cymbella kappii
                                                   [Cymbella turgidula var. kappii]
                                             Cymbella kavnensis
                                             Cymbella kawamurae
                                             Cymbella keilhaui
                                             Cymbella kemiana
                                             Cymbella kerguelenensis
                                             Cymbella kiamensis
                                             Cymbella knuthii
                                             Cymbella kochii
                                             Cymbella koeiei
                                             Cymbella koidzumiana
                                             Cymbella kolbei
                                                   [Cymbella hustedtii f. stigmata]
                                               Cymbella kolbei var. angusta
                                             Cymbella koreana
                                             Cymbella krasskei
                                             Cymbella lacus-karluki
                                             Cymbella lacustre
                                             Cymbella lacustris
                                                   Cymbella lacustris f. baicalensis
                                                   Cymbella lacustris f. curta
                                                   Cymbella lacustris f. inflata
                                               Cymbella lacustris var. australis
                                               Cymbella lacustris var. nipponica
                                               Cymbella lacustris var. sphagnicola
                                             Cymbella laetevirens
                                             Cymbella laevis
                                                   [Cocconema laeve]
                                                   [Cymbella gracilis var. laevis]
                                                   [Cymbella ventricosa var. laevis]
                                                   Cymbella laevis f. compacta
                                               Cymbella laevis var. lata
                                             Cymbella lanceolata
                                                   [Frustulia lanceolata]
                                                   [Schizonema lanceolatum]
                                                   Cymbella lanceolata f. baicalensis
                                                   Cymbella lanceolata f. maxima
                                                   Cymbella lanceolata f. minor
                                                   Cymbella lanceolata f. minuta
                                               Cymbella lanceolata var. asperum
                                               Cymbella lanceolata var. bottnica
                                               Cymbella lanceolata var. cornuta
                                                     [Cocconema cornutum]
                                                     [Cocconema lanceolatum var. cornutum]
                                                     [Cymbella cornuta]
                                               Cymbella lanceolata var. densestriata
                                               Cymbella lanceolata var. elongata
                                               Cymbella lanceolata var. fossilis
                                               Cymbella lanceolata var. grandipunctata
                                               Cymbella lanceolata var. inflata
                                               Cymbella lanceolata var. koreana
                                               Cymbella lanceolata var. longissima
                                               Cymbella lanceolata var. notata
                                               Cymbella lanceolata var. pantocseki
                                               Cymbella lanceolata var. robusta
                                             Cymbella lanceolota
                                               Cymbella lanceolota var. grossepunctata
                                             Cymbella lancettula
                                                   [Cymbella tumidula var. lancettula]
                                             Cymbella lancettuliformis
                                             Cymbella lange-bertalotii
                                                   [Cymbella cistula f. anormalis (abnormis)]
                                             Cymbella langii
                                             Cymbella lata
                                               Cymbella lata var. baicalensis
                                               Cymbella lata var. minor
                                               Cymbella lata var. nagpurensis
                                               Cymbella lata var. nipponica
                                             Cymbella latarea
                                                   [Encyonopsis latarea]
                                             Cymbella latefasciata
                                             Cymbella laterostrata
                                               Cymbella laterostrata var. alaskana
                                             Cymbella laubyi
                                               Cymbella laubyi var. lanceolata
                                             Cymbella laurenti
                                             Cymbella laxa
                                             Cymbella lecomtei
                                             Cymbella lembus
                                             Cymbella leptoceras
                                                   Cymbella leptoceras f. curta
                                                   Cymbella leptoceras f. minor
                                               Cymbella leptoceras var. angusta
                                               Cymbella leptoceras var. elongata
                                               Cymbella leptoceras var. genuina
                                               Cymbella leptoceras var. minor
                                             Cymbella leptoceroides
                                               Cymbella leptoceroides var. sublanceolata
                                             Cymbella leptoceros
                                                   Cymbella leptoceros f. indica
                                               Cymbella leptoceros var. angusta
                                               Cymbella leptoceros var. excisa
                                               Cymbella leptoceros var. guadalupensis
                                               Cymbella leptoceros var. major
                                             Cymbella lesothensis
                                             Cymbella levyi
                                             Cymbella lindheimeri
                                             Cymbella lindsayana
                                             Cymbella linearis
                                             Cymbella lineata
                                             Cymbella lineolatea
                                             Cymbella ljungneri
                                             Cymbella loczyi
                                             Cymbella lunata
                                               Cymbella lunata var. alaskaensis
                                             Cymbella lunula
                                             Cymbella maculata
                                                   Cymbella maculata f. curta
                                             Cymbella madagascariensis
                                             Cymbella maggiana
                                             Cymbella maharashtrensis
                                             Cymbella maillardi
                                             Cymbella malayensis
                                                   Cymbella malayensis f. rostrata
                                             Cymbella maliana
                                             Cymbella malinvaudi
                                             Cymbella mangini
                                             Cymbella marathwadensis
                                             Cymbella margaritifera
                                             Cymbella marginata
                                             Cymbella marginatum
                                             Cymbella marina
                                             Cymbella marnieri
                                             Cymbella marnierii
                                             Cymbella maxima
                                             Cymbella mendosa
                                                   Cymbella mendosa f. apiculata
                                                   Cymbella mendosa f. brevistriata
                                               Cymbella mendosa var. natalensis
                                             Cymbella menisculis
                                             Cymbella metzeltinii
                                             Cymbella mexicana
                                               Cymbella mexicana var. kamtschatica
                                                     [Cocconema kamtschatica]
                                                     [Cymbella gastroides var. kamtschatica]
                                                     [Cymbella kamtschatica]
                                               Cymbella mexicana var. lata
                                               Cymbella mexicana var. punctifera
                                                     [Cymbella punctifera]
                                             Cymbella microcephala
                                                   Cymbella microcephala f. intermedia
                                                   Cymbella microcephala f. sublinearis
                                                   Cymbella microcephala f. subrostrata
                                                   Cymbella microcephala f. undulata
                                               Cymbella microcephala var. crassa
                                               Cymbella microcephala var. rostellata
                                             Cymbella microstoma
                                             Cymbella minor
                                             Cymbella minuscula
                                             Cymbella minuta
                                               Cymbella minuta var. groenlandica
                                               Cymbella minuta var. minuta
                                               Cymbella minuta var. semicircularis
                                             Cymbella minutissima
                                             Cymbella miocenica
                                             Cymbella mirabilis
                                             Cymbella modicepunctata
                                             Cymbella moelleriana
                                               Cymbella moelleriana var. nipponica
                                             Cymbella mongolica
                                             Cymbella montana
                                             Cymbella moragoensis
                                             Cymbella muelleri
                                               Cymbella muelleri var. javanica
                                                     [Cymbella grossestriata var. javanica]
                                             Cymbella muralis
                                             Cymbella muscicola
                                             Cymbella nagpurensis
                                             Cymbella navicula
                                             Cymbella naviculacea
                                                   [Cymbella incerta var. naviculacea]
                                             Cymbella naviculiformis
                                                   Cymbella naviculiformis f. paulodilatata
                                               Cymbella naviculiformis var. minor
                                               Cymbella naviculiformis var. paulodilatata
                                               Cymbella naviculiformis var. tumida
                                             Cymbella naviculoides
                                             Cymbella neglecta
                                             Cymbella nekliaiana
                                             Cymbella nekliaiensis
                                             Cymbella neocaledonica
                                             Cymbella neocistula
                                                   [Cymbella cistula f. recta]
                                                   [Cymbella cistula f. typica]
                                                   [Cymbella cistula f. undulata]
                                                   [Cymbella cistula var. typica]
                                               Cymbella neocistula var. islandica
                                               Cymbella neocistula var. lunata
                                             Cymbella neogena
                                                   [Cymbella aspera var. neogena]
                                                   [Cymbella gastroides var. neogena]
                                             Cymbella neolanceolata
                                               Cymbella neolanceolata var. bottnica
                                             Cymbella neoleptoceros
                                               Cymbella neoleptoceros var. tenuistriata
                                             Cymbella neptuni
                                             Cymbella nerei
                                               Cymbella nerei var. inflata
                                             Cymbella neupauerii
                                             Cymbella neuquina
                                               Cymbella neuquina var. fastigata
                                                     [Cymbella cistula var. fastigata]
                                                     [Cymbella cistula var. fastigiata]
                                             Cymbella nipponica
                                             Cymbella niupanensis
                                             Cymbella nodosa
                                             Cymbella nordanskioeldii
                                               Cymbella nordanskioeldii var. peruviana
                                             Cymbella nordenskioeldii
                                                   Cymbella nordenskioeldii f. minor
                                             Cymbella norvegica
                                                   Cymbella norvegica f. minor
                                               Cymbella norvegica var. curta
                                               Cymbella norvegica var. linearis
                                               Cymbella norvegica var. minor
                                               Cymbella norvegica var. parva
                                             Cymbella novazeelandiana
                                             Cymbella novilunaris
                                             Cymbella nurnussiensis
                                             Cymbella nylstroomensis
                                             Cymbella obtusa
                                               Cymbella obtusa var. baltica
                                             Cymbella obtusiformis
                                             Cymbella obtusiuscula
                                             Cymbella octensis
                                             Cymbella oestrupii
                                             Cymbella olgae
                                             Cymbella oliffii
                                               Cymbella oliffii var. minor
                                             Cymbella oligocenica
                                             Cymbella olivacea
                                             Cymbella omaniana
                                             Cymbella oncliniorum
                                             Cymbella operculata
                                             Cymbella orientalis
                                             Cymbella orsiniana
                                             Cymbella osmanabadensis
                                             Cymbella ovalis
                                             Cymbella pachycephala
                                             Cymbella pachyptera
                                             Cymbella paenetruncata
                                             Cymbella pagesi
                                             Cymbella palpebralis
                                             Cymbella palustris
                                               Cymbella palustris var. alpina
                                             Cymbella panjaoensis
                                             Cymbella pankowii
                                             Cymbella pantocsekii
                                             Cymbella parasitica
                                             Cymbella parva
                                               Cymbella parva var. elongata
                                               Cymbella parva var. minuta
                                             Cymbella parvula
                                             Cymbella parvulissima
                                             Cymbella patagonica
                                             Cymbella paucistriata
                                               Cymbella paucistriata var. splendens
                                             Cymbella pauli
                                             Cymbella pavlovi
                                             Cymbella pedunculata
                                             Cymbella pelagica
                                             Cymbella peraffinis
                                             Cymbella peragalloi
                                             Cymbella peraspera
                                               Cymbella peraspera var. colombiana
                                               Cymbella peraspera var. gigantea
                                                     [Cymbella gastroides var. gigantea]
                                                     [Cymbella gigantea]
                                             Cymbella percapitata
                                             Cymbella percymbiformis
                                             Cymbella perdurrans
                                             Cymbella perfecta
                                             Cymbella perfossilis
                                             Cymbella perjaponica
                                             Cymbella pernodensis
                                               Cymbella pernodensis var. delicata
                                               Cymbella pernodensis var. delicatula
                                             Cymbella perparva
                                             Cymbella perpusilla
                                                   Cymbella perpusilla f. elongata
                                               Cymbella perpusilla var. azorica
                                               Cymbella perpusilla var. lanceolata
                                               Cymbella perpusilla var. major
                                               Cymbella perpusilla var. moreirae
                                               Cymbella perpusilla var. obtusata
                                               Cymbella perpusilla var. stratior
                                               Cymbella perpusilla var. subcapitata
                                             Cymbella pervarians
                                             Cymbella philadelphica
                                             Cymbella picta
                                             Cymbella pisciculus
                                             Cymbella placentula
                                             Cymbella plena
                                               Cymbella plena var. depressa
                                               Cymbella plena var. lunata
                                             Cymbella plutonica
                                             Cymbella polita
                                             Cymbella poretzkyi
                                             Cymbella porrecta
                                             Cymbella powaiana
                                             Cymbella praeclara
                                             Cymbella praerupta
                                             Cymbella praetumida
                                             Cymbella pretoriensis
                                                   Cymbella pretoriensis f. subcapitata
                                             Cymbella procera
                                             Cymbella proschkinae
                                             Cymbella prostrata
                                                   Cymbella prostrata f. minor
                                               Cymbella prostrata var. curvata
                                               Cymbella prostrata var. undulata
                                             Cymbella protracta
                                             Cymbella proxima
                                                   Cymbella proxima f. gravida
                                               Cymbella proxima var. borealis
                                               Cymbella proxima var. bottnica
                                             Cymbella psammophila
                                             Cymbella pseudo-lanceolata
                                             Cymbella pseudoaffinis
                                             Cymbella pseudoalpinioides
                                             Cymbella pseudocuspidata
                                             Cymbella pseudodelicatula
                                             Cymbella pseudohybrida
                                             Cymbella pseudoincerta
                                             Cymbella pseudolapponica
                                             Cymbella pseudonorvegica
                                             Cymbella pseudostodderi
                                             Cymbella pseudotumida
                                               Cymbella pseudotumida var. pseudoborealis
                                             Cymbella pseudoturgidula
                                             Cymbella pulchra
                                             Cymbella pusilla
                                                   Cymbella pusilla f. densestriata
                                               Cymbella pusilla var. tropica
                                               Cymbella pusilla var. uzboica
                                             Cymbella quinquepunctata
                                             Cymbella rabenhorstii
                                             Cymbella radiosa
                                             Cymbella rainierensis
                                             Cymbella rakocziana
                                             Cymbella rapsonii
                                             Cymbella rarissima
                                             Cymbella rautenbachiae
                                             Cymbella raytonensis
                                               Cymbella raytonensis var. debegenica
                                             Cymbella recta
                                             Cymbella recurva
                                             Cymbella reducta
                                               Cymbella reducta var. tumida
                                             Cymbella reinhardii
                                               Cymbella reinhardii var. nipponica
                                             Cymbella reniformis
                                             Cymbella reviersiana
                                             Cymbella rheophila
                                                   [Cymbella turgidula var. nipponica]
                                             Cymbella rhetica
                                               Cymbella rhetica var. capitata
                                             Cymbella rhodesi
                                             Cymbella rhodesica
                                             Cymbella rivularis
                                             Cymbella robertii
                                             Cymbella robusta
                                             Cymbella rosenkrantzii
                                             Cymbella rostrata
                                             Cymbella rotundata
                                             Cymbella rumrichae
                                             Cymbella runcina
                                             Cymbella rupicola
                                               Cymbella rupicola var. genuina
                                               Cymbella rupicola var. rostrata
                                               Cymbella rupicola var. rupicola
                                             Cymbella ruttneri
                                               Cymbella ruttneri var. liaotungensis
                                               Cymbella ruttneri var. microcephala
                                               Cymbella ruttneri var. obtusa
                                                     [Encyonopsis ruttneri var. obtusa]
                                             Cymbella sabzewarensis
                                             Cymbella sagarensis
                                                   Cymbella sagarensis f. gracilis
                                             Cymbella salina
                                             Cymbella salinarum
                                             Cymbella sanctae-margaritae
                                             Cymbella sarsii
                                             Cymbella saxicola
                                             Cymbella scherffeliana
                                               Cymbella scherffeliana var. acuminata
                                             Cymbella schilleri
                                             Cymbella schimanskii
                                               Cymbella schimanskii var. excelsa
                                                     [Cymbella cistula var. excelsa]
                                             Cymbella schmidtii
                                             Cymbella schubartii
                                             Cymbella schubartoides
                                             Cymbella schwabei
                                             Cymbella schweickerdtii
                                             Cymbella scotica
                                               Cymbella scotica var. naviculacea
                                               Cymbella scotica var. scotica
                                             Cymbella scotlandica
                                             Cymbella scutariana
                                             Cymbella semielliptica
                                             Cymbella semircularis
                                             Cymbella semisymmetrica
                                             Cymbella septentrionalis
                                             Cymbella shii
                                             Cymbella sibirica
                                             Cymbella signata
                                               Cymbella signata var. chinensis
                                             Cymbella silesiaca
                                               Cymbella silesiaca var. altensis
                                             Cymbella similis
                                               Cymbella similis var. exilis
                                             Cymbella simonsenii
                                             Cymbella simplex
                                             Cymbella sinensis
                                             Cymbella sinica
                                               Cymbella sinica var. nipponica
                                             Cymbella sinuata
                                                   Cymbella sinuata f. sinuata
                                               Cymbella sinuata var. fossilis
                                               Cymbella sinuata var. laticeps
                                             Cymbella skabitschevskyi
                                             Cymbella skvortzovii
                                             Cymbella sliacsensis
                                             Cymbella smithii
                                             Cymbella speciosa
                                             Cymbella sphaerophora
                                             Cymbella splendens
                                             Cymbella standeri
                                             Cymbella staubii
                                             Cymbella stigmaphora
                                             Cymbella stodderi
                                               Cymbella stodderi var. usterii
                                               Cymbella stodderi var. valida
                                             Cymbella strontiana
                                             Cymbella sturii
                                                   [Cymbella grunowii]
                                                   [Cymbella sturii var. hungarica]
                                                   Cymbella sturii f. minor
                                               Cymbella sturii var. undulata
                                             Cymbella stuxbergii
                                                   [Cocconema stuxbergii]
                                               Cymbella stuxbergii var. baikalensis
                                               Cymbella stuxbergii var. robusta
                                               Cymbella stuxbergii var. tumida
                                             Cymbella suavis
                                             Cymbella subaequalis
                                                   Cymbella subaequalis f. minor
                                             Cymbella subalpina
                                                   Cymbella subalpina f. apiculata
                                                   Cymbella subalpina f. brevistriata
                                               Cymbella subalpina var. jeniseyensis
                                               Cymbella subalpina var. natalensis
                                             Cymbella subantarctica
                                             Cymbella subarctica
                                             Cymbella subaspera
                                                   [Cymbella aspera var. minor]
                                                   [Cymbella gastroides var. minor]
                                               Cymbella subaspera var. salina
                                             Cymbella subcapitata
                                             Cymbella subcistula
                                             Cymbella subconstricta
                                             Cymbella subcryptocephala
                                             Cymbella subcymbiformis
                                             Cymbella subdirecta
                                             Cymbella subhelvetica
                                             Cymbella subincerta
                                             Cymbella subkolbei
                                             Cymbella sublata
                                               Cymbella sublata var. gracilis
                                             Cymbella subleptoceros
                                             Cymbella subovalis
                                             Cymbella subparviformis
                                                   [Cymbella parviformis]
                                             Cymbella subsymmetrica
                                             Cymbella subtravertiensis
                                             Cymbella subtruncata
                                               Cymbella subtruncata var. similis
                                             Cymbella subturgida
                                               Cymbella subturgida var. neocaledonica
                                               Cymbella subturgida var. wallaceana
                                             Cymbella subturgidula
                                             Cymbella subventricosa
                                             Cymbella subwulffii
                                             Cymbella subzewarensis
                                             Cymbella suecica
                                               Cymbella suecica var. inaequalis
                                             Cymbella sumatrensis
                                             Cymbella superparva
                                             Cymbella symmetrica
                                             Cymbella szontaghii
                                             Cymbella tainensis
                                             Cymbella takoradiensis
                                             Cymbella tartuensis
                                             Cymbella tasmaniensis
                                               Cymbella tasmaniensis var. alaskana
                                             Cymbella tatrensis
                                             Cymbella tengganoensis
                                             Cymbella tenuis
                                             Cymbella tenuissima
                                               Cymbella tenuissima var. semiradiata
                                             Cymbella terrafuegiana
                                             Cymbella theronii
                                             Cymbella thienemanni
                                             Cymbella tibetana
                                             Cymbella ticinensis
                                             Cymbella towoetensis
                                             Cymbella transsilvanica
                                             Cymbella transvaalensis
                                                   Cymbella transvaalensis f. maior
                                             Cymbella triangulata
                                             Cymbella triangulum
                                               Cymbella triangulum var. gracilis
                                             Cymbella triconfusa
                                             Cymbella tristis
                                             Cymbella tropica
                                               Cymbella tropica var. tenuipunctata
                                             Cymbella truncata
                                             Cymbella tsoneka
                                             Cymbella tsonka
                                             Cymbella tumescens
                                             Cymbella tumida
                                                   [Cocconema tumidum]
                                                   [Cymbella stomatophora]
                                                   Cymbella tumida f. fossilis
                                                   Cymbella tumida f. major
                                                   Cymbella tumida f. ventricosa
                                               Cymbella tumida subsp. australica
                                               Cymbella tumida var. baicalensis
                                               Cymbella tumida var. borealis
                                                     [Cocconema stomatophorum var. borealis]
                                               Cymbella tumida var. fossilis
                                                     [Cocconema stomatophorum var. fossilis]
                                               Cymbella tumida var. genuina
                                               Cymbella tumida var. gibba
                                                     [Cocconema stomatophorum var. gibba]
                                               Cymbella tumida var. tumida
                                             Cymbella tumidula
                                                   Cymbella tumidula f. latiuscula
                                                   Cymbella tumidula f. recta
                                               Cymbella tumidula var. angustatum
                                               Cymbella tumidula var. salinarum
                                             Cymbella turgida
                                                   Cymbella turgida f. minor
                                                   Cymbella turgida f. nana
                                                   Cymbella turgida f. parva
                                               Cymbella turgida var. acuminata
                                               Cymbella turgida var. acutiuscula
                                               Cymbella turgida var. barrowiana
                                               Cymbella turgida var. excisa
                                               Cymbella turgida var. genuina
                                               Cymbella turgida var. gibbosa
                                               Cymbella turgida var. hinganica
                                               Cymbella turgida var. intermedia
                                               Cymbella turgida var. jeniseyensis
                                               Cymbella turgida var. muscosa
                                               Cymbella turgida var. obtusa
                                               Cymbella turgida var. robusta
                                               Cymbella turgida var. semicircularis
                                               Cymbella turgida var. valida
                                               Cymbella turgida var. ventro
                                             Cymbella turgidula
                                               Cymbella turgidula var. bengalensis
                                               Cymbella turgidula var. inaequalis
                                               Cymbella turgidula var. venezolana
                                             Cymbella turgiduliformis
                                             Cymbella uebelackeri
                                             Cymbella uenoi
                                             Cymbella ulensis
                                             Cymbella umara
                                             Cymbella undulata
                                             Cymbella unipunctata
                                             Cymbella valaiseana
                                             Cymbella valida
                                             Cymbella van-oyei
                                             Cymbella vanoyei
                                             Cymbella variabilis
                                             Cymbella variostriata
                                               Cymbella variostriata var. granulata
                                             Cymbella vaszaryi
                                             Cymbella vegeta
                                             Cymbella venezuelana
                                             Cymbella ventricosa
                                                   Cymbella ventricosa f. baicalensis
                                                   Cymbella ventricosa f. major
                                                   Cymbella ventricosa f. maxima
                                                   Cymbella ventricosa f. minor
                                                   Cymbella ventricosa f. minuscula
                                                   Cymbella ventricosa f. minuta
                                                   Cymbella ventricosa f. robusta
                                               Cymbella ventricosa var. arcuata
                                               Cymbella ventricosa var. depressa
                                               Cymbella ventricosa var. emorsa
                                               Cymbella ventricosa var. genuina
                                               Cymbella ventricosa var. gibbosa
                                               Cymbella ventricosa var. girodi
                                                     [Cymbella girodi]
                                                     [Cymbella gracilis var. girodi]
                                                     [Encyonema girodi]
                                               Cymbella ventricosa var. groenlandica
                                               Cymbella ventricosa var. hankensis
                                               Cymbella ventricosa var. jeniseyensis
                                               Cymbella ventricosa var. lanceolata
                                               Cymbella ventricosa var. lunula
                                               Cymbella ventricosa var. major
                                               Cymbella ventricosa var. niupanensis
                                               Cymbella ventricosa var. obtusa
                                                     [Encyonema caespitosum var. obtusa]
                                               Cymbella ventricosa var. ovata
                                               Cymbella ventricosa var. pekinensis
                                               Cymbella ventricosa var. semicircularis
                                               Cymbella ventricosa var. vasta
                                             Cymbella vestigiana
                                             Cymbella vidarbhensis
                                             Cymbella volkii
                                             Cymbella von-hauseniae
                                             Cymbella vulgata
                                               Cymbella vulgata var. plitvicensis
                                             Cymbella weslawskii
                                             Cymbella wittrockii
                                                   Cymbella wittrockii f. minor
                                               Cymbella wittrockii var. subrecta
                                             Cymbella wolffii
                                             Cymbella wolterecki
                                               Cymbella wolterecki var. capitata
                                             Cymbella yabe
                                             Cymbella yangtzensis
                                             Cymbella yarrensis
                                               Cymbella yarrensis var. minuta
                                             Cymbella zambesiana
                                             Cymbella zimmermannii
                                     Cymbellafalsa
                                             Cymbellafalsa diluviana
                                                   [Cymbella couleensis]
                                                   [Cymbella diluviana]
                                                   [Cymbella expecta]
                                                   [Navicula diluviana]
                                     Cymbopleura
                                             Cymbopleura acuta
                                                   [Cymbella americana var. acuta]
                                               Cymbopleura acuta var. angusta
                                             Cymbopleura acutiformis
                                             Cymbopleura acutiuscula
                                             Cymbopleura albanica
                                             Cymbopleura amphicephala
                                             Cymbopleura ampullacea
                                               Cymbopleura ampullacea var. lata
                                             Cymbopleura anglica
                                                   [Cymbella amphicephala var. anglica]
                                                   [Cymbella cuspidata var. anglica]
                                             Cymbopleura angustata
                                                   [Navicula angustata]
                                                   [Navicula cryptocephala var. angustata]
                                               Cymbopleura angustata var. fontinalis
                                               Cymbopleura angustata var. spitsbergensis
                                               Cymbopleura angustata var. tenuis
                                             Cymbopleura apiculata
                                             Cymbopleura argentina
                                               Cymbopleura argentina var. subapiculata
                                             Cymbopleura austriaca
                                             Cymbopleura brasiliana
                                             Cymbopleura broenlundensis
                                                   [Cymbella broenlundensis]
                                             Cymbopleura budayana
                                             Cymbopleura citriformis
                                             Cymbopleura citrus
                                                   [Cymbella amphicephala var. citrus]
                                                   [Cymbella citrus]
                                             Cymbopleura cleveana
                                             Cymbopleura crassinervia
                                             Cymbopleura crassipunctata
                                               Cymbopleura crassipunctata var. nonornata
                                             Cymbopleura cuspidata
                                                   [Cymbella meniscus]
                                                   [Cymbella ovum]
                                             Cymbopleura decipiens
                                                   [Cymbella decipiens]
                                             Cymbopleura declivis
                                             Cymbopleura delicatula
                                               Cymbopleura delicatula subsp. judaica
                                             Cymbopleura designata
                                             Cymbopleura diminuta
                                                   [Cymbella aequalis var. diminuta]
                                                   [Cymbella diminuta]
                                                   [Cymbella obtusa var. diminuta]
                                             Cymbopleura disparestriata
                                             Cymbopleura disposita
                                                   [Cymbella disposita]
                                             Cymbopleura distinguenda
                                                   [Cymbella distinguenda]
                                             Cymbopleura dorserostrata
                                             Cymbopleura edlundii
                                             Cymbopleura elliptica
                                             Cymbopleura emoda
                                             Cymbopleura florentina
                                                   [Cymbella aequalis var. florentina]
                                                   [Cymbella florentina]
                                                   [Cymbella subaequalis var. florentina]
                                               Cymbopleura florentina var. brevis
                                             Cymbopleura florentiniformis
                                             Cymbopleura fluminea
                                                   [Cymbella fluminea]
                                             Cymbopleura frequens
                                               Cymbopleura frequens var. rivularis
                                               Cymbopleura frequens var. saxonica
                                             Cymbopleura gadjiana
                                             Cymbopleura geofriedana
                                             Cymbopleura gokyoensis
                                             Cymbopleura gondwana
                                             Cymbopleura gutwinskii
                                                   [Cymbella ehrenbergii (ehrenbergi) var. gutwinskii]
                                             Cymbopleura hauckii
                                             Cymbopleura heilprinensis
                                                   [Cymbella heilprinensis]
                                                   [Encyonema heilprinense]
                                             Cymbopleura heinii
                                             Cymbopleura hercynica
                                                   [Cymbella amphicephala var. hercynica]
                                                   [Cymbella hercynica]
                                             Cymbopleura hintzii
                                             Cymbopleura hornii
                                                   [Cymbella hornii]
                                             Cymbopleura hustedtiana
                                             Cymbopleura hustedtii
                                             Cymbopleura hybrida
                                               Cymbopleura hybrida var. capitata
                                                     [Cymbella hybrida var. capitata]
                                             Cymbopleura inaequaliformis
                                             Cymbopleura inaequalis
                                                   [Cymbella cucumis var. delicata]
                                                   [Cymbella dissimilis]
                                                   [Cymbella ehrenbergii var. minor]
                                                   [Cymbella inaequalis]
                                                   [Navicula inaequalis]
                                             Cymbopleura inaequilatera
                                                   [Navicula inaequilatera]
                                             Cymbopleura inca
                                             Cymbopleura incerta
                                                   [Cymbella pisciculus var. incerta]
                                                   [Cymbella scotica var. incerta]
                                                   [Cymbella subaequalis var. incerta]
                                               Cymbopleura incerta var. grunowii
                                               Cymbopleura incerta var. spitsbergensis
                                             Cymbopleura incertiformis
                                               Cymbopleura incertiformis var. crassipunctata
                                                     [Cymbella incerta var. crassipunctata]
                                               Cymbopleura incertiformis var. inariensis
                                               Cymbopleura incertiformis var. julma
                                               Cymbopleura incertiformis var. laterostrata
                                               Cymbopleura incertiformis var. linearis
                                                     [Cymbella angustata var. linearis]
                                                     [Cymbella incerta var. linearis]
                                             Cymbopleura inducta
                                                   [Cymbella inducta]
                                             Cymbopleura infirma
                                             Cymbopleura kanakarum
                                             Cymbopleura korana
                                             Cymbopleura krasskei
                                                   [Cymbella obtusa f. krasskei]
                                                   [Cymbella subaequalis f. krasskei]
                                             Cymbopleura kuelbsii
                                               Cymbopleura kuelbsii var. nonfasciata
                                             Cymbopleura labradoriana
                                             Cymbopleura laeviformis
                                             Cymbopleura lanceolata
                                                   [Cymbella hybrida var. lanceolata]
                                             Cymbopleura lange-bertalotii
                                                   [Cymbella amphicephala var. differta]
                                                   [Cymbella differta]
                                             Cymbopleura lapponica
                                                   [Cymbella lapponica]
                                             Cymbopleura lata
                                               Cymbopleura lata var. americana
                                               Cymbopleura lata var. irrorata
                                               Cymbopleura lata var. latetruncata
                                               Cymbopleura lata var. lura
                                               Cymbopleura lata var. truncata
                                             Cymbopleura laterostrata
                                               Cymbopleura laterostrata var. rostrata
                                             Cymbopleura latestriata
                                                   [Cymbella latestriata]
                                             Cymbopleura laticapitata
                                             Cymbopleura linearis
                                                   [Cymbella naviculiformis var. linearis]
                                             Cymbopleura longa
                                                   [Cymbella longa]
                                             Cymbopleura lura
                                             Cymbopleura madagascariensis
                                             Cymbopleura magna
                                                   [Cymbella magna]
                                             Cymbopleura malayensis
                                             Cymbopleura margalefii
                                             Cymbopleura meisteri
                                                   [Cymbella meisteri]
                                             Cymbopleura metzeltinii
                                               Cymbopleura metzeltinii var. julma
                                             Cymbopleura michelcostei
                                             Cymbopleura mirifica
                                                   [Cymbella mirifica]
                                             Cymbopleura monticula
                                                   [Cymbella monticola]
                                             Cymbopleura naviculiformis
                                                   [Cocconema naviculiforme]
                                                   [Cymbella cuspidata var. naviculiformis]
                                               Cymbopleura naviculiformis var. laticapitata
                                             Cymbopleura nekliaiensis
                                             Cymbopleura neocaledonica
                                             Cymbopleura neoheteropleura
                                             Cymbopleura novafundlandica
                                             Cymbopleura oblongata
                                               Cymbopleura oblongata var. grandis
                                               Cymbopleura oblongata var. oblonga
                                                     [Cymbella aequalis var. oblonga]
                                                     [Cymbella subaequalis var. oblonga]
                                               Cymbopleura oblongata var. parva
                                               Cymbopleura oblongata var. stenoraphe
                                             Cymbopleura oregonica
                                                   [Cymbella oregonica]
                                               Cymbopleura oregonica var. lata
                                             Cymbopleura ornata
                                                   [Cymbella ornata]
                                             Cymbopleura palpebralis
                                             Cymbopleura parunculoides
                                             Cymbopleura peranglica
                                             Cymbopleura percuspidata
                                             Cymbopleura peroregonica
                                             Cymbopleura perpalpebralis
                                             Cymbopleura perprocera
                                             Cymbopleura perstechlinensis
                                             Cymbopleura platycephala
                                                   [Cymbella aequalis f. platycephala]
                                                   [Cymbella aequalis var. platycephala]
                                             Cymbopleura prisca
                                                   [Cymbella austriaca var. prisca]
                                             Cymbopleura problematica
                                                   [Cymbella problematica]
                                             Cymbopleura procera
                                                   [Cymbella neoprocera]
                                             Cymbopleura pseudoparunculus
                                                   [Navicula parunculoides]
                                                   [Navicula pseudoparunculus]
                                             Cymbopleura pyrenaica
                                             Cymbopleura rainierensis
                                             Cymbopleura reinhardtii
                                                   [Cymbella reinhardtii]
                                             Cymbopleura rhomboidea
                                               Cymbopleura rhomboidea var. angusta
                                             Cymbopleura rupicola
                                                   [Cymbella laevis var. rupicola]
                                               Cymbopleura rupicola var. korana
                                               Cymbopleura rupicola var. minor
                                             Cymbopleura scabiosa
                                                   [Cymbella scabiosa]
                                             Cymbopleura semigibbosa
                                                   [Cymbella semigibbosa]
                                             Cymbopleura similiformis
                                               Cymbopleura similiformis var. angusta
                                             Cymbopleura similis
                                             Cymbopleura spuria
                                                   [Cymbella spuria]
                                             Cymbopleura stauroneiformis
                                                   [Cymbella stauroneiformis]
                                             Cymbopleura stechlinensis
                                             Cymbopleura subaequalis
                                                   [Cymbella aequalis var. subaequalis]
                                                   [Cymbella obtusa var. subaequalis]
                                               Cymbopleura subaequalis var. alpestris
                                               Cymbopleura subaequalis var. pertruncata
                                               Cymbopleura subaequalis var. truncata
                                             Cymbopleura subanglica
                                             Cymbopleura subapiculata
                                             Cymbopleura subaustriaca
                                             Cymbopleura subcuspidata
                                                   [Cymbella cuspidata var. obtusiuscula]
                                                   [Cymbella heteropleura var. minor]
                                                   [Cymbella subcuspidata]
                                             Cymbopleura subheteropleura
                                             Cymbopleura sublanceolata
                                               Cymbopleura sublanceolata var. javanica
                                             Cymbopleura sublancettula
                                             Cymbopleura subrostrata
                                                   [Cymbella ehrenbergii var. americana]
                                                   [Cymbella heteropleura var. subrostrata]
                                                   [Cymbella heteropleura var. symmetrica]
                                                   [Cymbella subrostrata]
                                             Cymbopleura transsilvanica
                                             Cymbopleura truncata
                                             Cymbopleura tsoneka
                                             Cymbopleura tumida
                                             Cymbopleura tynnii
                                                   [Cymbella tynnii]
                                             Cymbopleura undosa
                                             Cymbopleura valaiseana
                                             Cymbopleura vasta
                                                   [Cymbella vasta]
                                             Cymbopleura vrana
                                             Cymbopleura yateana
                                                   [Cymbella yateana]
                                     Delicata
                                             Delicata aequistriata
                                                   [Cymbopleura aequistriata]
                                             Delicata apiculata
                                             Delicata capitata
                                             Delicata costei
                                                   [Cymbella costei]
                                                   [Cymbella delicatula var. costei]
                                                   [Cymbopleura costei]
                                             Delicata couseranensis
                                             Delicata delicatula
                                                   [Cocconema delicatulum]
                                               Delicata delicatula var. alpestris
                                               Delicata delicatula var. angusta
                                             Delicata gadjiana
                                             Delicata gerloffii
                                                   [Cymbella gerloffii]
                                             Delicata judaica
                                             Delicata krammeri
                                             Delicata minuta
                                             Delicata neocaledonica
                                             Delicata nepouiana
                                             Delicata sinensis
                                             Delicata sparsistriata
                                               Delicata sparsistriata var. parva
                                             Delicata spitsbergensis
                                             Delicata verena
                                               Delicata verena var. sandrae
                                     Encyonema
                                             Encyonema accedens
                                             Encyonema aequilongum
                                             Encyonema affine
                                             Encyonema africanum
                                             Encyonema alpiniforme
                                             Encyonema alpinum
                                             Encyonema altaplanense
                                             Encyonema altiplanense
                                             Encyonema amanianum
                                             Encyonema ampliatum
                                             Encyonema andranokelynum
                                             Encyonema angustecapitatum
                                             Encyonema angustum
                                             Encyonema ankobraense
                                             Encyonema antogaryanum
                                             Encyonema apiculatum
                                             Encyonema aueri
                                             Encyonema auerswaldii
                                                   [Cymbella caespitosum var. auerswaldii]
                                                   [Cymbella prostrata var. auerswaldii]
                                                   [Cymbella ventricosa var. auerswaldii]
                                                   [Encyonema caespitosum var. auerswaldii]
                                             Encyonema biarcuatum
                                             Encyonema bipartitum
                                             Encyonema blancheanum
                                               Encyonema blancheanum var. neocaledonicum
                                             Encyonema braunii
                                                   [Cymbella braunii]
                                             Encyonema brehmiforme
                                             Encyonema brehmii
                                                   [Cymbella brehmii]
                                             Encyonema brevicapitatum
                                             Encyonema brewerianum
                                             Encyonema caespitosum
                                                   [Cocconema caespitosum]
                                                   [Cymbella caespitosa]
                                                   [Cymbella caespitosum]
                                                   [Cymbella prostrata var. caespitosa]
                                                   [Cymbella ventricosa var. caespitosa]
                                               Encyonema caespitosum var. comensis
                                             Encyonema calciphilum
                                             Encyonema canadense
                                             Encyonema carina
                                             Encyonema caronianum
                                             Encyonema cascadense
                                             Encyonema cespitosum
                                               Encyonema cespitosum var. comensis
                                               Encyonema cespitosum var. maxima
                                             Encyonema chilense
                                             Encyonema directiforme
                                             Encyonema directum
                                             Encyonema disjunctum
                                             Encyonema distinctepunctatum
                                             Encyonema distinctum
                                             Encyonema donatoi
                                             Encyonema droseraphilum
                                             Encyonema dubium
                                             Encyonema elginense
                                                   [Cocconema turgidum]
                                                   [Cymbella elginensis]
                                                   [Encyonema turgidum]
                                               Encyonema elginense var. stigmoideum
                                             Encyonema evergladianum
                                             Encyonema fogedii
                                             Encyonema formosum
                                                   [Cymbella formosa]
                                             Encyonema friedelhinzae
                                             Encyonema gaeumannii
                                                   [Cymbella gaeumananii]
                                                   [Cymbella gaeumannii]
                                             Encyonema gauemannii
                                             Encyonema geisslerae
                                             Encyonema genkalii
                                             Encyonema gerstenbergeri
                                             Encyonema gibbum
                                             Encyonema gracile
                                             Encyonema graciloides
                                             Encyonema grossestriatum
                                                   [Cymbella grossestriatum]
                                             Encyonema guatemalense
                                             Encyonema guettingeri
                                             Encyonema hamsherae
                                             Encyonema hebridicum
                                             Encyonema hebridiforme
                                             Encyonema hilliardii
                                                   [Cymbella hilliardii]
                                             Encyonema hintzii
                                             Encyonema hoelii
                                             Encyonema hohnii
                                                   [Cymbella hohnii]
                                             Encyonema holmenii
                                             Encyonema hophense
                                             Encyonema hungaricum
                                             Encyonema hustedtii
                                               Encyonema hustedtii var. neocaledonicum
                                             Encyonema hyndmanii
                                             Encyonema inarense
                                             Encyonema incertum
                                             Encyonema incurvatum
                                             Encyonema indistinctum
                                             Encyonema inelegans
                                             Encyonema insulsum
                                             Encyonema javanicum
                                             Encyonema jemtlandicum
                                               Encyonema jemtlandicum var. stigmoidea
                                               Encyonema jemtlandicum var. venezolana
                                             Encyonema jordaniforme
                                             Encyonema jordanii
                                             Encyonema juriljii
                                                   [Cymbella juriljii]
                                             Encyonema kalbei
                                             Encyonema kamtschaticum
                                               Encyonema kamtschaticum var. parva
                                             Encyonema krasskei
                                             Encyonema kuelbsii
                                             Encyonema kuelbsiii
                                             Encyonema kukenanum
                                             Encyonema lacustre
                                                   [Schizonema lacustre]
                                             Encyonema lancettulum
                                             Encyonema lange-bertalotii
                                               Encyonema lange-bertalotii var. inarensis
                                               Encyonema lange-bertalotii var. obscuriformis
                                             Encyonema langebertalotii
                                             Encyonema lapponicum
                                             Encyonema lataerolatum
                                             Encyonema latareolatum
                                             Encyonema latecapitatum
                                             Encyonema latens
                                                   [Cymbella latens]
                                                   [Cymbella minuta f. latens]
                                                   [Cymbella ventricosa f. latens]
                                             Encyonema latissimum
                                             Encyonema latum
                                               Encyonema latum var. baicalense
                                             Encyonema leibleinii
                                             Encyonema lineolatum
                                               Encyonema lineolatum var. major
                                             Encyonema lunatum
                                                   [Cymbella gracilis f. lunata]
                                                   [Cymbella gracilis var. lunata]
                                                   [Cymbella ventricosa var. lunata]
                                                   [Encyonema ventricosum var. lunatum]
                                               Encyonema lunatum var. borealis
                                             Encyonema magnum
                                             Encyonema malaysianum
                                             Encyonema manguinii
                                             Encyonema marginestriatum
                                             Encyonema maximum
                                             Encyonema melidense
                                             Encyonema menisculus
                                             Encyonema mesianum
                                                   [Cymbella mesiana]
                                             Encyonema metzeltinii
                                             Encyonema mexicanum
                                             Encyonema minusculus
                                             Encyonema minutiformae
                                             Encyonema minutiforme
                                               Encyonema minutiforme var. apicodeclinatum
                                             Encyonema minutum
                                                   [Cymbella gracilis var. minuta]
                                                   [Cymbella ventricosa var. minuta]
                                                   [Encyonema ventricosum f. minuta]
                                                   [Encyonema ventricosum var. minuta]
                                                   [Encyonema ventricosum var. minutum]
                                               Encyonema minutum var. pseudogracilis
                                                     [Cymbella minuta var. pseudogracilis]
                                                     [Cymbella turgida var. pseudogracilis]
                                             Encyonema mirabilis
                                             Encyonema moragoense
                                             Encyonema muelleri
                                                   [Cymbella grossestriata var. obtusiuscula]
                                                   Encyonema muelleri f. ventricosa
                                                         [Cymbella muelleri f. ventricosa]
                                                         [Encyonema stoermeri]
                                                         [Encyonema turgidum var. ventricosa]
                                             Encyonema natalense
                                             Encyonema neocaledonicum
                                               Encyonema neocaledonicum var. leve
                                             Encyonema neogracile
                                               Encyonema neogracile var. tenuipunctata
                                             Encyonema neomesianum
                                             Encyonema neomuelleri
                                             Encyonema nicafei
                                             Encyonema norvegica
                                               Encyonema norvegica var. lapponica
                                                     [Cymbella norvegica var. lapponica]
                                             Encyonema norvegicum
                                               Encyonema norvegicum var. alpinum
                                               Encyonema norvegicum var. capitatum
                                               Encyonema norvegicum var. crassipunctatum
                                             Encyonema obscuriforme
                                             Encyonema obscurum
                                                   [Cymbella obscura]
                                               Encyonema obscurum var. alpina
                                             Encyonema obtusum
                                               Encyonema obtusum var. truncatum
                                             Encyonema ochridanum
                                             Encyonema octense
                                             Encyonema oestrupii
                                             Encyonema paludosa
                                               Encyonema paludosa var. subsalina
                                             Encyonema pankowii
                                             Encyonema paradoxum
                                             Encyonema parvum
                                             Encyonema paucistriatum
                                             Encyonema perelginense
                                             Encyonema pergracile
                                             Encyonema perminutum
                                             Encyonema perpusillum
                                                   [Cymbella imitans var. striatior]
                                                   [Cymbella perpusilla var. striator]
                                               Encyonema perpusillum var. chilense
                                             Encyonema persilesiacum
                                               Encyonema persilesiacum var. ata-tau
                                             Encyonema picinskae
                                             Encyonema plenum
                                             Encyonema polystigmoideum
                                             Encyonema ponspendens
                                             Encyonema ponteanum
                                             Encyonema procerum
                                             Encyonema proschkinae
                                             Encyonema prostratum
                                                   [Cocconema prostratum]
                                                   [Monema prostratum]
                                                   [Schizonema prostratum]
                                             Encyonema pseudogracile
                                             Encyonema pseudomuelleri
                                             Encyonema reichardtii
                                                   [Cymbella reichardtii]
                                             Encyonema reimeri
                                             Encyonema rifelanum
                                             Encyonema riotecense
                                             Encyonema rostratum
                                             Encyonema rugosiforme
                                             Encyonema rugosum
                                                   [Cymbella rugosa]
                                             Encyonema rumrichae
                                             Encyonema sarsii
                                             Encyonema schimanskii
                                             Encyonema schneideri
                                             Encyonema schoemanii
                                             Encyonema schwabei
                                             Encyonema semilanceolatum
                                             Encyonema sibericum
                                             Encyonema silesacum
                                             Encyonema silesiacum
                                                   [Cymbella minuta var. silesiaca]
                                                   [Cymbella ventricosa var. silesiaca]
                                               Encyonema silesiacum var. altensis
                                               Encyonema silesiacum var. distigmata
                                               Encyonema silesiacum var. distinctepunctata
                                               Encyonema silesiacum var. elegans
                                               Encyonema silesiacum var. excisa
                                               Encyonema silesiacum var. lata
                                               Encyonema silesiacum var. latarea
                                               Encyonema silesiacum var. latistriata
                                               Encyonema silesiacum var. ventriformis
                                             Encyonema simile
                                             Encyonema sinicum
                                             Encyonema sparsipunctatum
                                             Encyonema spiculum
                                                   [Cymbella spicula]
                                             Encyonema spitsbergense
                                             Encyonema standeri
                                             Encyonema stigmoideum
                                             Encyonema subalpinum
                                             Encyonema subbrevistriatum
                                             Encyonema subdirectum
                                             Encyonema subelginense
                                             Encyonema subgracile
                                             Encyonema subhinzae
                                             Encyonema subjavanicum
                                             Encyonema subkukenanum
                                             Encyonema sublanceolatum
                                             Encyonema submenisculus
                                             Encyonema subminusculus
                                             Encyonema subminutum
                                             Encyonema subnorvegicum
                                             Encyonema subobscurum
                                             Encyonema subperpusillum
                                             Encyonema subrostratum
                                             Encyonema subtenerum
                                             Encyonema subtenuissimum
                                             Encyonema subtriangulum
                                             Encyonema subtriste
                                             Encyonema subturgidum
                                             Encyonema subventricosum
                                             Encyonema supergracile
                                             Encyonema tapajoz
                                             Encyonema tasmaniense
                                             Encyonema temperei
                                             Encyonema tenerum
                                             Encyonema tenuicephalum
                                             Encyonema tenuissimum
                                             Encyonema thermale
                                             Encyonema theronii
                                             Encyonema thioense
                                             Encyonema triangulatum
                                             Encyonema trianguliforme
                                             Encyonema triangulum
                                                   [Cymbella rhomboidea]
                                             Encyonema triste
                                             Encyonema tropicum
                                             Encyonema truncatum
                                             Encyonema tumida
                                             Encyonema umara
                                             Encyonema ungeri
                                             Encyonema vanoyei
                                               Encyonema vanoyei var. grande
                                             Encyonema venezolanum
                                               Encyonema venezolanum var. similis
                                             Encyonema ventricosum
                                               Encyonema ventricosum var. angustum
                                             Encyonema volkii
                                             Encyonema vulgare
                                               Encyonema vulgare var. chilensis
                                               Encyonema vulgare var. tasmanensis
                                             Encyonema wallaceanum
                                               Encyonema wallaceanum var. neocaledonicum
                                             Encyonema wojtalae
                                             Encyonema wydrzyckae
                                             Encyonema yarrense
                                             Encyonema yellowstonianum
                                     Encyonopsis
                                             Encyonopsis aequaliformis
                                             Encyonopsis aequalis
                                                   [Cymbella aequalis var. grevillei]
                                             Encyonopsis albertana
                                             Encyonopsis alpina
                                             Encyonopsis amatolensis
                                                   [Cymbella amatolensis]
                                             Encyonopsis anacondae
                                             Encyonopsis anaktuvukensis
                                                   [Cymbella anaktuvukensis]
                                             Encyonopsis anassae
                                                   [Cymbella anassae]
                                             Encyonopsis angusta
                                             Encyonopsis angustissima
                                             Encyonopsis azuleana
                                             Encyonopsis behrei
                                             Encyonopsis blanchensis
                                             Encyonopsis bobmarshallensis
                                             Encyonopsis borapetensis
                                             Encyonopsis braunii
                                             Encyonopsis brevistriata
                                             Encyonopsis buedeliformis
                                             Encyonopsis buedelii
                                             Encyonopsis catharinae
                                             Encyonopsis cesatiformis
                                             Encyonopsis cesatii
                                                   [Cymbella cesatii var. paradoxa]
                                               Encyonopsis cesatii var. geitleri
                                             Encyonopsis coloradensis
                                             Encyonopsis costaricana
                                             Encyonopsis cryptocephala
                                             Encyonopsis czarneckii
                                             Encyonopsis dakotae
                                             Encyonopsis degenerata
                                             Encyonopsis delicatissima
                                             Encyonopsis descripta
                                               Encyonopsis descripta var. asymmetrica
                                             Encyonopsis descriptiformis
                                             Encyonopsis difficiliformis
                                             Encyonopsis difficilis
                                             Encyonopsis dubitabilis
                                             Encyonopsis dubitata
                                             Encyonopsis eifelana
                                             Encyonopsis falaisensiformis
                                             Encyonopsis fararama
                                             Encyonopsis floridana
                                             Encyonopsis fonticola
                                             Encyonopsis fragilis
                                             Encyonopsis frequentiformis
                                             Encyonopsis frequentis
                                             Encyonopsis glacialis
                                             Encyonopsis gomphonemiformis
                                             Encyonopsis grunowii
                                             Encyonopsis hustedtii
                                             Encyonopsis kaingensis
                                             Encyonopsis kerguelenensis
                                             Encyonopsis kerguelensis
                                                   [Cymbella kerguelensis]
                                             Encyonopsis kergueliformis
                                             Encyonopsis krammeri
                                             Encyonopsis krammerioides
                                             Encyonopsis krasskei
                                             Encyonopsis kriegeri
                                                   [Cymbella kriegeri]
                                               Encyonopsis kriegeri var. fossilis
                                             Encyonopsis kurtii
                                             Encyonopsis kutenaiorum
                                             Encyonopsis lacusalpini
                                             Encyonopsis lacuscaerulei
                                             Encyonopsis lacusglacialis
                                             Encyonopsis lanceo-elliptica
                                             Encyonopsis lanceoelliptica
                                             Encyonopsis lanceola
                                                   [Navicula falaisensis var. lanceola]
                                             Encyonopsis lange-bertalotii
                                             Encyonopsis lauca
                                             Encyonopsis leei
                                               Encyonopsis leei var. sinensis
                                             Encyonopsis linearis
                                             Encyonopsis mantasoana
                                             Encyonopsis marnieri
                                             Encyonopsis medicinalis
                                             Encyonopsis microcephala
                                                   [Cymbella microcephala f. major]
                                                   [Cymbella microcephala var. major]
                                             Encyonopsis minuta
                                             Encyonopsis montana
                                             Encyonopsis moseri
                                             Encyonopsis muscicola
                                             Encyonopsis namibiana
                                             Encyonopsis naviculoides
                                             Encyonopsis neerlandica
                                             Encyonopsis neoamphioxis
                                             Encyonopsis neoamphioxys
                                             Encyonopsis olifii
                                             Encyonopsis opima
                                             Encyonopsis orientalis
                                             Encyonopsis palustris
                                             Encyonopsis patagonica
                                             Encyonopsis perborealis
                                             Encyonopsis perfloridana
                                             Encyonopsis petri
                                             Encyonopsis pfisteri
                                             Encyonopsis radialis
                                             Encyonopsis raytonensis
                                             Encyonopsis recta
                                             Encyonopsis reichardtii
                                             Encyonopsis reviersiana
                                             Encyonopsis riflensis
                                             Encyonopsis robusta
                                                   [Cymbella microcephala f. robusta]
                                                   [Cymbella microcephala var. robusta]
                                             Encyonopsis rockiensis
                                             Encyonopsis rostrata
                                             Encyonopsis rumrichae
                                             Encyonopsis ruttneri
                                             Encyonopsis ruttnerii
                                             Encyonopsis schneideri
                                             Encyonopsis schubartii
                                             Encyonopsis speciosa
                                             Encyonopsis spicula
                                             Encyonopsis spiculiformis
                                             Encyonopsis stafsholtii
                                             Encyonopsis stodderi
                                             Encyonopsis subalpina
                                             Encyonopsis subcapitata
                                             Encyonopsis subcryptocephala
                                             Encyonopsis subfonticola
                                             Encyonopsis subkerguelensis
                                             Encyonopsis subminuta
                                             Encyonopsis subruttneri
                                             Encyonopsis subspicula
                                             Encyonopsis substodderi
                                             Encyonopsis symmetrica
                                             Encyonopsis tavirana
                                             Encyonopsis thienemannii
                                             Encyonopsis thumensis
                                             Encyonopsis tiroliana
                                             Encyonopsis treinishii
                                             Encyonopsis usteri
                                             Encyonopsis vandamii
                                             Encyonopsis variostriata
                                             Encyonopsis weilandii
                                             Encyonopsis yucatanensis
                                                   [Encyonema yucatanense]
                                     Gomphocymbella
                                             Gomphocymbella rossii
                                             Gomphocymbella vulgaris
                                                   [Gomphonema olivaceum f. vulgaris]
                                     Gomphocymbellopsis
                                             Gomphocymbellopsis ancyli
                                                   [Cymbella ancyli]
                                                   [Gomphocymbella ancyli]
                                                   [Gomphocymbella ruttneri]
                                     Navicella
                                     Navicymbula
                                             Navicymbula pusilla
                                                   [Cocconema pusilla 'pusillum']
                                                   [Navicella pusilla]
                                                   [Seminavis pusilla]
                                               Navicymbula pusilla var. lata
                                               Navicymbula pusilla var. rotundata
                                     Oricymba
                                             Oricymba japonica
                                                   [Cymbella japonica]
                                             Oricymba latirotundata
                                             Oricymba subaequalis
                                             Oricymba subovalis
                                     Placoneis
                                             Placoneis abiskoensis
                                                   [Navicula dicephala f. abiskoensis]
                                             Placoneis abundans
                                             Placoneis antediluvianum
                                             Placoneis apicalicostata
                                             Placoneis balcanica
                                             Placoneis bicuneus
                                             Placoneis centropunctata
                                             Placoneis chilensis
                                             Placoneis clementioides
                                                   [Navicula clementioides]
                                             Placoneis clementis
                                               Placoneis clementis var. linearis
                                               Placoneis clementis var. nipponica
                                                     [Navicula similis var. nipponica]
                                             Placoneis constans
                                             Placoneis conveniens
                                             Placoneis dacostae
                                             Placoneis demeraroides
                                             Placoneis densa
                                             Placoneis dicephala
                                             Placoneis disparilis
                                                   [Navicula disparilis]
                                             Placoneis diversipunctata
                                             Placoneis elegans
                                             Placoneis elegantula
                                             Placoneis elginensis
                                                   [Navicula anglica f. major]
                                                   [Navicula dicephala f. minor]
                                                   [Navicula dicephala var. elginensis]
                                                   [Navicula placentula var. anglica]
                                                   [Navicula tumida var. anglica]
                                                   [Pinnularia elginensis]
                                                   [Placoneis anglica]
                                                   [Placoneis dicephala var. elginensis]
                                               Placoneis elginensis var. cuneata
                                                     [Navicula dicephala f. cuneata]
                                               Placoneis elginensis var. neglecta
                                               Placoneis elginensis var. rostrata
                                               Placoneis elginensis var. undulata
                                             Placoneis elliptica
                                             Placoneis exigua
                                                   [Navicula gastrum var. exigua]
                                                   [Pinnularia exigua]
                                                   [Placoneis elginensis f. exigua]
                                                   [Placoneis gastrum var. exigua]
                                               Placoneis exigua var. signata
                                             Placoneis exiguoides
                                             Placoneis explanata
                                             Placoneis gastriformis
                                             Placoneis gastrum
                                                   [Pinnularia gastrum]
                                                   [Schizonema gastrum]
                                                   Placoneis gastrum f. nipponica
                                               Placoneis gastrum var. signata
                                             Placoneis gracilis
                                             Placoneis habita
                                             Placoneis hambergii
                                                   [Navicula gastrum var. hambergii]
                                                   [Navicula hambergii]
                                                   [Navicula quadripartita]
                                                   [Pinnularia hambergii]
                                             Placoneis humilis
                                             Placoneis ignorata
                                                   [Navicula ignorata]
                                             Placoneis inexplorata
                                             Placoneis interglacialis
                                             Placoneis itamoemae
                                             Placoneis jatobensis
                                               Placoneis jatobensis var. capitata
                                               Placoneis jatobensis var. jatobensis
                                             Placoneis lata
                                                   [Navicula dicephala var. lata]
                                                   [Navicula elginensis var. lata]
                                             Placoneis madagascariensis
                                             Placoneis merinensis
                                             Placoneis minor
                                             Placoneis molesta
                                             Placoneis molestissima
                                             Placoneis neglecta
                                             Placoneis neotropica
                                             Placoneis obtuseprotracta
                                             Placoneis ovillus
                                             Placoneis paraelginensis
                                             Placoneis paraundulata
                                             Placoneis parunculus
                                             Placoneis pellaifa
                                             Placoneis perelginensis
                                             Placoneis placentula
                                                   [Navicula gastrum var. placentula]
                                                   [Navicula placentula]
                                                   [Pinnularia placentula]
                                                   [Schizonema placentula]
                                               Placoneis placentula var. apiculata
                                               Placoneis placentula var. jenisseyensis
                                               Placoneis placentula var. lanceolata
                                                     [Navicula tumida var. lanceolata]
                                               Placoneis placentula var. latiuscula
                                               Placoneis placentula var. maculata
                                               Placoneis placentula var. rostrata
                                                     [Placoneis placentula f. rostrata]
                                             Placoneis porifera
                                               Placoneis porifera var. opportuna
                                             Placoneis pseudabundans
                                             Placoneis pseudanglica
                                                   [Placoneis anglophila]
                                               Placoneis pseudanglica var. signata
                                             Placoneis pseudoclementis
                                             Placoneis pseudodemerarae
                                             Placoneis pseudoporifera
                                             Placoneis reversa
                                             Placoneis rhombelliptica
                                             Placoneis rostrata
                                                   [Navicula dicephala var. rostrata]
                                                   [Navicula elginensis var. rostrata]
                                             Placoneis santaremensis
                                             Placoneis scharfii
                                             Placoneis serena
                                             Placoneis signata
                                             Placoneis significans
                                             Placoneis sinensis
                                             Placoneis sovereignae
                                             Placoneis subclementis
                                             Placoneis subelegans
                                             Placoneis subgastriformis
                                             Placoneis subplacentula
                                             Placoneis surinamensis
                                             Placoneis symmetrica
                                             Placoneis tersa
                                             Placoneis undulata
                                             Placoneis uruguayensis
                                             Placoneis vicina
                                             Placoneis witkowskii
                                             Placoneis yucatanensis
                                             Placoneis zimmermannii
                                     Pseudencyonema
                                             Pseudencyonema rossii
                                                   [Cymbella rossii]