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

Drexel University, Academy of Natural Sciences - Algae
Catalog #: PH00147864
a85422fb-c9ce-432c-ba0c-4a69eaf44e40
F. S. Collins; W. A. Setchell #s.n. 28 July 1893
Spirogyra varians (Hassall) K
United States, a. Eagle Island, Penobscot Bay; b. Foxon, New Haven County

University Herbarium, University of California, Berkeley
Catalog #: UC98307
W. A. Setchell #s.n. 30 April 1892
Spirogyra varians (Hassall) Kützing
United States, Connecticut, New Haven, Foxon