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

Brown University - Algae
Catalog #: ABRU00003232
Mrs. W. C. Simmons s.n.
Polysiphonia violacea (Roth) Sprengel
United States, Rhode Island, Easton's Point, Newport, RI

Yale University Herbarium
Catalog #: YU.106533
Mrs. W. C. Simmons s.n. 00 August 1898
Polysiphonia violacea (Roth) Sprengel
United States, Rhode Island, Newport, Newport; Easton's Point, Newport, RI

Miami University - Algae
Catalog #: 000187137
W.C. Simmons #s.n. 00 August 1898
Polysiphonia violacea (Roth) Sprengel
United States, Rhode Island, Newport, Easton's Point, Newport