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

Brown University - Algae
Catalog #: ABRU00003014
F. S. Collins s.n. 17 April 1892
Scytonema hofmannii C.Agardh ex Bornet & Flahault
United States, Massachusetts, High Ledge, Melrose, MA

Michigan State University Algae
Catalog #: MSC0184648
F.S. Collins #s.n. 17 April 1892
Scytonema hoffmannii (Linnaeus) Kjellman
United States, Massachusetts, Middlesex, High Ledge, Melrose

Miami University - Algae
Catalog #: 000186818
F.S. Collins #s.n. 17 April 1892
Scytonema hofmanni
United States, Massachusetts, Middlesex, High Ledge, Melrose

Yale University Herbarium
Catalog #: YU.091486
Frank Shipley Collins s.n. 17 April 1892
Scytonema hofmannii C.Agardh ex Bornet & Flahault
United States, Massachusetts, Melrose; High Ledge, Melrose, MA