Collins, Holden & Setchell, Phycoth. Bor.-Amer.Collins, F.S.; Holden, I.; Setchell, W.A. [1-2300]
Brown University - Algae
F. S. Collins s.n. 11 June 1905
Phormidium retzii var. fasciculatum
United States, Massachusetts, Walden Pond, Lynnfield, MA
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Michigan State University Algae
F.S. Collins #s.n. 11 June 1905
Phormidium retzii var. fasciculatum
United States, Massachusetts, Essex, Walden Pond, Lynnfield
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Miami University - Algae
F.S. Collins #s.n. 11 June 1905
Phormidium retzii var. fasciculatum
United States, Massachusetts, Essex, Walden Pond, Lynnfield
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Yale University Herbarium
Frank Shipley Collins s.n. 11 June 1905
Phormidium retzii (C.Agardh) Kützing ex Gomont
United States, Massachusetts, Walden Pond, Lynnfield, MA
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