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

University of North Carolina at Chapel Hill Herbarium; Max & Fran Hommersand Algae Herbarium: Algae
Catalog #: NCU-A-0004409
Gardner, N. L. #P.B.-A. 2248 00 May 1916
Ceramium californicum J. Agardh
United States, California, Monterey, Pescadero Point; Pescadero Point, Monterey County, California

Brown University - Algae
Catalog #: ABRU00005062
N. L. Gardner s.n.
Ceramium californicum J.Agardh
United States, California, Monterey, Pescadero Point, CA

Field Museum of Natural History
Catalog #: C0515128F
N. L. Gardner #s.n. 00 May 1916
Ceramium californicum J.Agardh
United States, California, Monterey, Pescadero Point

University of Michigan
Catalog #: 645970
N.L. Gardner #s.n. 00 May 1916
Ceramium californicum J.Agardh
United States, California, Monterey, Pescadero Point

Michigan State University Algae
Catalog #: MSC0181606
N.L. Gardner #s.n. 00 May 1916
Ceramium californicum J.Agardh
United States, California, Monterey, Pescadero Point

Miami University - Algae
Catalog #: 000210282
N.L. Gardner #s.n. 00 May 1916
Ceramium californicum J.Agardh
United States, California, Monterey, Pescadero Point

Yale University Herbarium
Catalog #: YU.095528
Nathaniel Lyon Gardner s.n.
Ceramium californicum J.Agardh
United States, California, Monterey, Pescadero Point, CA