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

Rutgers University, Chrysler Herbarium - Macroalgae Collection
Catalog #: CHRB0021483
G.R. Crocker s.n. 22 February 1898
Ulva acanthophora (Kützing) Hayden, Blomster, Maggs, P.C.Silva, Stanhope & J.R.Waaland
United States, California, Alameda Creek

Field Museum of Natural History
Catalog #: C0519555F
Miss S. P. Monks #s.n. 00 August 1898
Enteromorpha acanthophora Kützing
United States, California, Ventura, Santa Paula Mountains, California