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

Brown University - Algae
Catalog #: ABRU00002939
F. S. Collins s.n.
Ceramium rubrum C.Agardh
United States, Maine, Hancock, Brooksville; Spectacle Island, Penobscot Bay, ME

University Herbarium, University of California, Berkeley
Catalog #: UC1843095
F. S. Collins #11417 00 July 1896
Ceramium virgatum Roth
United States, Maine, Hancock, Spectacle Island, Penobscot Bay, Maine

Drexel University, Academy of Natural Sciences - Algae
Catalog #: PH00215936
e869553f-72d5-4140-8d17-7c3802af332f
F. S. Collins #s.n. 00 July 1896
Ceramium rubrum C.Agardh
United States, Maine, Hancock, Spectacle Island, Penobscot Bay

University of Michigan
Catalog #: 646797
F.S. Collins #s.n. 00 July 1896
Ceramium virgatum Roth
United States, Maine, Hancock, Spectacle Island, Penobscot Bay

University of Michigan
Catalog #: 646949
F.S. Collins #s.n. 00 July 1896
Ceramium virgatum Roth
United States, Maine, Spectacle Island, Penobscot Bay

Field Museum of Natural History
Catalog #: C0515273F
F.S. Collins #s.n. 00 July 1896
Ceramium virgatum Roth
United States, Maine, Hancock, Spectacle Island, Penobscot Bay

Michigan State University Algae
Catalog #: MSC0181632
F.S. Collins #s.n. 00 July 1896
Ceramium rubrum C.Agardh
United States, Maine, Hancock, Spectacle Island, Penobscot Bay

Miami University - Algae
Catalog #: 000186756
F.S. Collins #s.n. 00 July 1896
Ceramium rubrum C.Agardh
United States, Maine, Hancock, Spectacle Island, Penobscot Bay

Yale University Herbarium
Catalog #: YU.091427
Frank Shipley Collins s.n. 00 July 1896
Ceramium rubrum C.Agardh
United States, Maine, Hancock, Brooksville; Spectacle Island, Penobscot Bay, ME