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

Brown University - Algae
Catalog #: ABRU00003009
H. M. Richards s.n. 10 August 1894
Phormidium autumnale (C.Agardh) Gomont
United States, Rhode Island, Newport, Jamestown; Conanicut Island, RI

Miami University - Algae
Catalog #: 000210399
H. M. Richards #s.n. 10 August 1894
phormidium KŸtzing ex Gomont, 1892
United States, Rhode Island, Newport, Conanicut Island, Jamestown

Michigan State University Algae
Catalog #: MSC0183485
H.M. Richards #s.n. 10 August 1894
Microcoleus autumnalis (C.Agardh) Rabenhorst
United States, Rhode Island, Newport, Conanicut Island, Jamestown

Miami University - Algae
Catalog #: 000186815
H.M. Richards #s.n. 10 August 1894
Phormidium autumnale (C.Agardh) Gomont
United States, Rhode Island, Newport, Conanicut Island, Jamestown

Yale University Herbarium
Catalog #: YU.091483
Herbert Maule Richards s.n. 10 August 1894
Phormidium autumnale (C.Agardh) Gomont
United States, Rhode Island, Newport, Jamestown; Conanicut Island, RI