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

Rutgers University, Chrysler Herbarium - Macroalgae Collection
Catalog #: CHRB0012591
F. S. Collins #504 14 August 1898
Symplocastrum purpurascens (Gomont ex Gomont) Anagnostidis
United States, Massachusetts, Middlesex, Winchester Reservoir; Winchester Reservoir, Middlesex Fells, MA; 42.452467 -71.112831

Brown University - Algae
Catalog #: ABRU00003124
F.S. Collins s.n. 14 August 1898
Schizothrix purpurascens (Kützing) Gomont
United States, Massachusetts, Winchester Reservoir, Middlesex Fells, MA

Michigan State University Algae
Catalog #: MSC0184976
F.S. Collins #s.n. 14 August 1898
Symplocastrum purpurascens (Gomont ex Gomont) Anagnostidis
United States, Massachusetts, Middlesex, Winchester Reservoir, Middlesex Fells

Miami University - Algae
Catalog #: 000186911
F.S. Collins #s.n. 14 August 1898
Schizothrix purpurascens (Kützing) Gomont
United States, Massachusetts, Middlesex, Winchester Reservoir, Middlesex Fells

Yale University Herbarium
Catalog #: YU.091586
Frank Shipley Collins s.n. 14 August 1898
Schizothrix purpurascens var. cruenta Gomont, 1892
United States, Massachusetts, Winchester Reservoir, Middlesex Fells, MA