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

Brown University - Algae
Catalog #: ABRU00003328
Mrs. W. C. Simmons s.n.
Dictyosiphon foeniculaceus var. americanus F.S.Collins
United States, Rhode Island, Jamestown; Conanicut, RI

Yale University Herbarium
Catalog #: YU.106551
Mrs. W. C. Simmons s.n. 19 May 1893
Dictyosiphon foeniculaceus var. americanus F.S.Collins
United States, Rhode Island, Newport, Jamestown; Conanicut, RI

University of Michigan
Catalog #: 633317
Mrs. W.C. Simmons #s.n. 16 May 1899
Dictyosiphon foeniculaceus var. americanus F.S.Collins,
United States, Rhode Island, Conanicut

Michigan State University Algae
Catalog #: MSC0182444
Mrs. W.C. Simmons #s.n. 16 May 1899
Dictyosiphon foeniculaceus var. americanus F.S.Collins
United States, Rhode Island, Newport, Conanicut

Miami University - Algae
Catalog #: 000210422
Mrs. W.C. Simmons #s.n. 16 May 1899
Dictyosiphon foeniculaceus var. americanus F.S.Collins
United States, Rhode Island, Conanicut