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Tilden, Amer. Algae
Tilden, J.E. [1-650]
Field Museum of Natural History
Catalog #: C0531553F
Josephine E. Tilden #s.n. 23 November 1894
Pithophora oedogonia (Montagne) Wittrock
United States, Minnesota, Minneapolis
University of Michigan
Catalog #: 731218
Josephine E. Tilden #s.n.
Pithophora kewensis Wittrock
United States, Minnesota, Hennepin, Minneapolis
Michigan State University Algae
Catalog #: MSC0184080
Josephine E. Tilden #s.n. 23 November 1894
Pithophora roettleri (Roth) Wittrock
United States, Minnesota, Hennepin, Minneapolis
Miami University - Algae
Catalog #: 000179143
Josephine E. Tilden #s.n. 23 November 1894
Pithophora roettleri (Roth) Wittrock
United States, Minnesota, Hennepin, Minneapolis