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

Field Museum of Natural History
Catalog #: C0518506F
W.C. Simmons #s.n. 16 May 1899
Dictyosiphon foeniculaceus var. americanus F.S.Collins
United States, Rhode Island, Conanicut Island