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

Rutgers University, Chrysler Herbarium - Macroalgae Collection
Catalog #: CHRB0012607
N. L. Gardner #1716 14 July 1906
Scytonema guyanense Bornet & Flahault
United States, California, Marin, Mount Tamalpais; Mount Tamalpais, CA