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

Brown University - Algae
Catalog #: ABRU00004252
F. S. Collins s.n. 19 April 1908
Cosmarium pachydermum var. minus Nordstedt
United States, Massachusetts, Eastham, MA

University of Michigan
Catalog #: 736147
F.S. Collins #s.n. 19 April 1908
Cosmarium pachydermum var. minus Nordstedt
United States, Massachusetts, Barnstable, Eastham

University of Michigan
Catalog #: 736148
F.S. Collins #s.n. 19 April 1908
Cosmarium pachydermum var. minus Nordstedt
United States, Massachusetts, Barnstable, Eastham

Michigan State University Algae
Catalog #: MSC0182218
F.S. Collins #s.n. 19 April 1908
Cosmarium pachydermum var. minus Nordstedt
United States, Massachusetts, Barnstable, Eastham

Miami University - Algae
Catalog #: 000188641
F.S. Collins #s.n.
Cosmarium pachydermum var. minus Nordstedt
United States, Massachusetts, Barnstable, Eastham

Drexel University, Academy of Natural Sciences - Algae
Catalog #: PH00142670
8eb046b9-9b27-4481-a71b-2fb6a8c749af
F.S. Collins #s.n. 19 April 1908
Cosmarium pachydermum P.Lundell
United States, Massachusetts, Barnstable, Eastham

Yale University Herbarium
Catalog #: YU.094559
Frank Shipley Collins s.n. 19 April 1908
Cosmarium pachydermum var. minus Nordstedt
United States, Massachusetts, Barnstable, Eastham; Eastham, MA