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

Brown University - Algae
Catalog #: ABRU00002724
F. S. Collins s.n.
Amphithrix violacea Bornet & Flahault
United States, Maine, Hancock, Eagle Island, Penobscot Bay, ME

Drexel University, Academy of Natural Sciences - Algae
Catalog #: PH00232149
ab6cb8b1-5a9b-425a-a922-00c9817efdb0
F. S. Collins #s.n. 00 July 1892
Amphithrix violacea Bornet & Flahault
United States, Maine, Cumberland, Eagle Island, Penobscot Bay

Michigan State University Algae
Catalog #: MSC0181164
F.S. Collins #s.n. 00 July 1892
Amphithrix janthina Bornet & Flahault
United States, Maine, Cumberland, Eagle Island, Penobscot Bay

Miami University - Algae
Catalog #: 000186621
F.S. Collins #s.n. 00 July 1892
Amphithrix violacea Bornet & Flahault
United States, Maine, Cumberland, Eagle Island, Penobscot Bay

Yale University Herbarium
Catalog #: YU.091298
Frank Shipley Collins s.n. 00 July 1892
Amphithrix violacea Bornet & Flahault
United States, Maine, Hancock, Eagle Island, Penobscot Bay, ME