Jürgens, Algae Aquat. Jever.
Jürgens, G.H.B. [1 - [200]]

Field Museum of Natural History
Catalog #: C0172657F
Jürgens #s.n.
Conferva globifera Mertens
Germany, Lower Saxony, [precise locality unknown]

University of Michigan
Catalog #: 663557
Jurgens #s.n.
Nemalion multifidum (F.Weber & D.Mohr) Chauvin
, [No loc]