Collins, Holden & Setchell, Phycoth. Bor.-Amer.Collins, F.S.; Holden, I.; Setchell, W.A. [1-2300]
University Herbarium, University of California, Berkeley
F. S. Collins #s.n. 14 May 1894
Spirogyra calospora Cleve
United States, Massachusetts, Middlesex, Middlesex Falls
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University Herbarium, University of California, Berkeley
W. A. Setchell #s.n. 20 April 1892
Spirogyra calospora Cleve
United States, Connecticut, New London, Norwich
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