Collins, Holden & Setchell, Phycoth. Bor.-Amer.Collins, F.S.; Holden, I.; Setchell, W.A. [1-2300]
Brown University - Algae
F. S. Collins s.n. 18 July 1909
Spirogyra porticalis var. tenuispira
United States, Massachusetts, Lake Quannapowitt, Wakefield, MA
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University Herbarium, University of California, Berkeley
F. S. Collins #s.n. 18 July 1909
Spirogyra porticalis (O.F.Müller) Dumortier
United States, Massachusetts, Middlesex, Lake Quannapowitt, Wakefield
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Michigan State University Algae
F.S. Collins #s.n. 13 August 1910
Spirogyra porticalis (O.F.Müller) Dumortier
United States, Massachusetts, Middlesex, Lower Pond, Wakefield
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Miami University - Algae
F.S. Collins #s.n.
Spirogyra porticalis (O.F.Müller) Dumortier
United States, Massachusetts, Middlesex, Lower Pond, Wakefield
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Yale University Herbarium
Frank Shipley Collins s.n. 18 July 1909
Spirogyra porticalis (O.F.Müller) Dumortier
United States, Massachusetts, Lake Quannapowitt, Wakefield, MA
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