Collins, Holden & Setchell, Phycoth. Bor.-Amer.Collins, F.S.; Holden, I.; Setchell, W.A. [1-2300]
Brown University - Algae
F. S. Collins s.n. 29 March 1918
Phormidium incrustatum var. cataractarum (Nägeli) Gomont
United States, Illinois, Saint Clair, Falling Spring, IL
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Rutgers University, Chrysler Herbarium - Macroalgae Collection
F. S. Collins #2256 29 March 1918
Phormidium incrustatum var cataractum
United States, Illinois, Saint Clair, Falling Spring; Falling Spring
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Michigan State University Algae
F.S. Collins #s.n. 29 March 1918
Phormidium incrustatum var. cataractum (Nägeli) Gomont ex Gomont
United States, Illinois, Saint Clair, Falling Spring
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Miami University - Algae
F.S. Collins #s.n.
Phormidium incrustatum var. cataractum
United States, Illinois, Saint Clair, Falling Spring
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Yale University Herbarium
Frank Shipley Collins s.n. 29 March 1918
Phormidium incrustatum var. cataractarum (Nägeli) Gomont
United States, Illinois, Saint Clair, Falling Spring, IL
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