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

Brown University - Algae
Catalog #: ABRU00003056
Mrs. W. C. Simmons s.n.
Ceramium fastigiatum Harvey
United States, Rhode Island, Newport, RI

Yale University Herbarium
Catalog #: YU.091528
Mrs. W. C. Simmons s.n.
Ceramium fastigiatum Harvey
United States, Rhode Island, Newport, Newport; Newport, RI

University of Michigan
Catalog #: 646283
Mrs. W.C. Simmons #s.n.
Ceramium cimbricum H.E.Petersen
United States, Rhode Island, Newport

University of Michigan
Catalog #: 646332
Mrs. W.C. Simmons #s.n.
Ceramium cimbricum H.E.Petersen
United States, Rhode Island, Newport

Michigan State University Algae
Catalog #: MSC0181620
Mrs. W.C. Simmons #s.n.
Ceramium fastigiatum Harvey
United States, Rhode Island, Newport, Newport

Miami University - Algae
Catalog #: 000186860
Mrs. W.C. Simmons #s.n.
Ceramium fastigiatum Harvey
United States, Rhode Island, Newport