Collins, Holden & Setchell, Phycoth. Bor.-Amer.Collins, F.S.; Holden, I.; Setchell, W.A. [1-2300]
Brown University - Algae
H. M. Richards s.n.
Nostoc sphaeroides Kützing ex Bornet & Flahault
United States, Massachusetts, Fresh Pond, Cambridge, MA
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Michigan State University Algae
H.M. Richards #s.n.
Nostoc sphaeroides Kützing ex Bornet & Flahault
United States, Massachusetts, Middlesex, Fresh Pond, Cambridge
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Miami University - Algae
H.M. Richards #s.n.
Nostoc sphaeroides Kützing ex Bornet & Flahault
United States, Massachusetts, Middlesex, Fresh Pond, Cambridge
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Yale University Herbarium
Herbert Maule Richards s.n.
Nostoc sphaeroides Kützing ex Bornet & Flahault
United States, Massachusetts, Middlesex, Cambridge; Fresh Pond, Cambridge, MA
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