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

Brown University - Algae
Catalog #: ABRU00003856
F. S. Collins s.n.
Polysiphonia violacea (Roth) Sprengel
United States, Maine, Cumberland, Harpswell; South Harpswell, ME

Yale University Herbarium
Catalog #: YU.106607
Frank Shipley Collins s.n.
Polysiphonia violacea (Roth) Sprengel
United States, Maine, Cumberland, Harpswell; South Harpswell, ME