Migula, Krypt. Germ., Austr. Helv. Exs. [Algen]Migula, E.F.A.W. [1 - 300]
Michigan State University Algae
V. Schoenfeldt #s.n. 22 September 1907
Nitzschia sigmoidea (Nitzsch) W.Smith
Germany, Grabental, Eisenach
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Drexel University, Academy of Natural Sciences - Algae
Catalog #: PH00348438
9d9bbcd7-1c96-49e2-835b-627234bb9e33
von Schonfeldt #168a 22 September 1907
Nitzschia sigmoidea (Nitzsch) W.Smith
Germany, Eisenach
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Drexel University, Academy of Natural Sciences - Algae
Catalog #: PH00348439
1aca006f-2a1e-4903-8c30-cb20bb0e2772
von Schonfeldt #168b 22 September 1907
Navicula radiosa var. acuta (W.Smith) Grunow
Germany, Eisenach
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Miami University - Algae
von Schonfeldt #s.n. 22 September 1907
Nitzschia sigmoidea (Nitzsch) W.Smith
Germany, Eisenach: Teich im Grabental
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