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

Brown University - Algae
Catalog #: ABRU00002702
G. F. Atkinson s.n. 26 April 1895
Phormidium favosum (Bory) Gomont
United States, New York, Ithaca, NY

Michigan State University Algae
Catalog #: MSC0184051
G.F. Atkinson #s.n. 26 April 1895
Phormidium favosum (Bory) Gomont
United States, New York, Tompkins, Ithaca

Miami University - Algae
Catalog #: 000186604
G.F. Atkinson #s.n. 26 April 1895
Phormidium favosum (Bory) Gomont
United States, New York, Tompkins, Ithaca

Yale University Herbarium
Catalog #: YU.091281
George F. Atkinson s.n. 26 April 1895
Phormidium favosum (Bory) Gomont
United States, New York, Tompkins, Ithaca; Ithaca, NY

University Herbarium, University of California, Berkeley
Catalog #: UC1858356
W. A. Setchell #s.n. 24 July 1890
Pleonosporium borreri (Smith) Nägeli
United States, Massachusetts, Barnstable, Woods Hole