Collins, Holden & Setchell, Phycoth. Bor.-Amer.
Collins, F.S.; Holden, I.; Setchell, W.A. [1-2300]

Brown University - Algae
Catalog #: ABRU00004419
F. S. Collins s.n. 23 May 1910
Spirogyra orthospira Nägeli
United States, Massachusetts, Lake Quannapowitt, Reading, MA

University Herbarium, University of California, Berkeley
Catalog #: UC1827973
F. S. Collins #s.n. 23 May 1910
Spirogyra majuscula Kützing
United States, Massachusetts, Middlesex, Lake Quannapowitt, Reading

University of Michigan
Catalog #: 736705
F.S. Collins #s.n. 23 May 1910
Spirogyra orthospira Nägeli
United States, Massachusetts, Middlesex, Lake Quannapowitt, Reading

University of Michigan
Catalog #: 736709
F.S. Collins #s.n. 23 May 1910
Spirogyra orthospira Nägeli
United States, Massachusetts, Middlesex, Lake Quannapowitt, Reading

Michigan State University Algae
Catalog #: MSC0184793
F.S. Collins #s.n. 23 May 1910
Spirogyra orthospira Nägeli
United States, Massachusetts, Middlesex, Lake Quannapowitt, Reading

Miami University - Algae
Catalog #: 000189193
F.S. Collins #s.n. 23 May 1910
Spirogyra orthospira Nägeli
United States, Massachusetts, Middlesex, Lake Quannapowitt, Reading

Yale University Herbarium
Catalog #: YU.094728
Frank Shipley Collins s.n. 23 May 1910
Spirogyra orthospira Nägeli
United States, Massachusetts, Lake Quannapowitt, Reading, MA