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

Rutgers University, Chrysler Herbarium - Macroalgae Collection
Catalog #: CHRB0021480
F.S. Collins s.n. 13 August 1910
Spirogyra porticalis (O.F.Müller) Dumortier
United States, Massachusetts, Wakefield; Lower Pond