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

Brown University - Algae
Catalog #: ABRU00004934
F. S. Collins s.n. 08 September 1914
Ulothrix tenuissima Kützing
United States, Massachusetts, Eastham, MA

University Herbarium, University of California, Berkeley
Catalog #: UC1856561
F. S. Collins #1021 08 September 1914
Ulothrix tenuissima Kützing
United States, Massachusetts, Barnstable, Eastham

University of Michigan
Catalog #: 733012
F.S. Collins #s.n. 08 September 1914
Ulothrix tenuissima Kützing
United States, Massachusetts, Barnstable, Eastham

Michigan State University Algae
Catalog #: MSC0185113
F.S. Collins #s.n. 08 September 1914
Ulothrix tenuissima Kützing
United States, Massachusetts, Barnstable, Eastham

Miami University - Algae
Catalog #: 000210170
F.S. Collins #s.n.
Ulothrix tenuissima Kützing
United States, Massachusetts, Barnstable, Eastham

Yale University Herbarium
Catalog #: YU.095404
Frank Shipley Collins s.n. 08 September 1914
Ulothrix tenuissima Kützing
United States, Massachusetts, Barnstable, Eastham; Eastham, MA