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

Brown University - Algae
Catalog #: ABRU00004199
F. S. Collins s.n. 02 September 1907
Cosmarium tetraophthalmum Brébisson ex Ralfs
United States, Massachusetts, Eastham, MA

Drexel University, Academy of Natural Sciences - Algae
Catalog #: PH00142684
aa598a70-a4ff-453e-b893-5b00c1d748a6
F. S. Collins #s.n. 02 September 1907
Cosmarium tetraophthalmum Br
United States, Massachusetts, Eastham, MA

University of Michigan
Catalog #: 736205
F.S. Collins #s.n. 02 September 1907
Cosmarium tetraophthalmum Brébisson ex Ralfs
United States, Massachusetts, Barnstable, Eastham

University of Michigan
Catalog #: 736206
F.S. Collins #s.n. 02 September 1907
Cosmarium tetraophthalmum Brébisson ex Ralfs
United States, Massachusetts, Barnstable, Eastham

Michigan State University Algae
Catalog #: MSC0182241
F.S. Collins #s.n. 02 September 1907
Cosmarium tetraophthalmum Brébisson ex Ralfs
United States, Massachusetts, Barnstable, Eastham

Miami University - Algae
Catalog #: 000188534
F.S. Collins #s.n.
Cosmarium tetraophthalmum Brébisson ex Ralfs
United States, Massachusetts, Barnstable, Eastham

Yale University Herbarium
Catalog #: YU.094506
Frank Shipley Collins s.n. 02 September 1907
Cosmarium tetraophthalmum Brébisson ex Ralfs
United States, Massachusetts, Barnstable, Eastham; Eastham, MA