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

Field Museum of Natural History
Catalog #: C0515119F
I. Holden #s.n. 00 July 1901
Ceramium botryocarpum A.W.Griffiths ex Harvey
United States, Connecticut, Fairfield, "The Gut," Bridgeport

Rutgers University, Chrysler Herbarium - Macroalgae Collection
Catalog #: CHRB0021477
Isaac Holden #894 31 July 1901
Ceramium virgatum Roth
United States, Connecticut, Bridgeport; "The Gut"