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

Brown University - Algae
Catalog #: ABRU00004346
Mrs. W. C. Simmons s.n.
Polysiphonia elongata (Hudson) Sprengel
United States, Rhode Island, Newport, RI

Yale University Herbarium
Catalog #: YU.094654
Mrs. W. C. Simmons s.n.
Polysiphonia elongata (Hudson) Sprengel
United States, Rhode Island, Newport, Newport; Newport, RI

University of Michigan
Catalog #: 667841
Mrs. W.C. Simmons #s.n.
Polysiphonia elongata (Hudson) Sprengel
United States, Rhode Island, Newport, Newport

University of Michigan
Catalog #: 667909
Mrs. W.C. Simmons #s.n.
Polysiphonia elongata (Hudson) Sprengel
United States, Rhode Island, Newport, Newport

Michigan State University Algae
Catalog #: MSC0184260
Mrs. W.C. Simmons #s.n.
Polysiphonia elongata (Hudson) Sprengel
United States, Rhode Island, Newport, Newport

Miami University - Algae
Catalog #: 000189070
Mrs. W.C. Simmons #s.n. 22 August 2015
Polysiphonia elongata (Hudson) Sprengel
United States, Rhode Island, Newport, Newport