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

Rutgers University, Chrysler Herbarium - Macroalgae Collection
Catalog #: CHRB0021500
N.L. Gardner s.n. 14 July 1906
Scytonema hofmannii C.Agardh ex Bornet & Flahault
United States, California, Marin, Mount Tamalpais

Rutgers University, Chrysler Herbarium - Macroalgae Collection
Catalog #: CHRB0012620
W. J. V. Osterhout #1717 21 June 1906
Scytonema hofmanii Ag.
United States, California, Marin