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

Brown University - Algae
Catalog #: ABRU00003578
Mrs. W. C. Simmons s.n. 31 August 1901
Ceramium tenuissimum var. patentissimum (Harvey) Farlow, 1881
United States, Rhode Island, Sachuest Point, Newport, RI

Yale University Herbarium
Catalog #: YU.091978
Mrs. W. C. Simmons s.n. 31 August 1901
Ceramium nodulosum var. tenue (C.Agardh) Serio
United States, Rhode Island, Newport; Sachuest Point, Newport, RI

Rutgers University, Chrysler Herbarium - Macroalgae Collection
Catalog #: CHRB0021239
Mrs. W. C. Simmons #895 31 August 1901
Ceramium fastigiatum Harvey
United States, Rhode Island, Newport, Sachuest Point, Newport

University of Michigan
Catalog #: 645923
Mrs. W.C. Simmons #s.n. 31 August 1901
Ceramium tenuissimum var. patentissimum Harvey
United States, Rhode Island, Sachuest Point, Newport

University of Michigan
Catalog #: 646347
Mrs. W.C. Simmons #s.n. 31 August 1901
Ceramium cimbricum H.E.Petersen
United States, Rhode Island, Sachuest Point, Newport

Field Museum of Natural History
Catalog #: C0515443F
Mrs. W.C. Simmons #s.n. 31 August 1901
Ceramium tenuissimum (Roth) Areschoug
United States, Rhode Island, Newport, Sachuest Point

Michigan State University Algae
Catalog #: MSC0181654
Mrs. W.C. Simmons #s.n. 31 August 1901
Ceramium tenuissimum var. patentissimum (Harvey) Farlow, 1881
United States, Rhode Island, Newport, Sachuest Point, Newport

Miami University - Algae
Catalog #: 000187532
Mrs. W.C. Simmons #s.n. 31 August 1901
Ceramium tenuissimum var. patentissimum (Harvey) Farlow, 1881
United States, Rhode Island, Sachuest Point, Newport