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

Brown University - Algae
Catalog #: ABRU00003255
F. S. Collins s.n. 22 August 1898
Ulothrix subtilis Kützing
United States, Massachusetts, Melrose, MA

University Herbarium, University of California, Berkeley
Catalog #: UC111737
F. S. Collins #s.n. 22 August 1898
Ulothrix subtilis Kützing
United States, Massachusetts, Middlesex, Melrose ,

University of Michigan
Catalog #: 732986
F.S. Collins #s.n. 22 August 1898
Ulothrix subtilis Kützing
United States, Massachusetts, Middlesex, Melrose

University of Michigan
Catalog #: 732995
F.S. Collins #s.n. 22 August 1898
Ulothrix subtilis Kützing
United States, Massachusetts, Middlesex, Melrose

Michigan State University Algae
Catalog #: MSC0183155
F.S. Collins #s.n. 22 August 1898
Klebsormidium subtile (Kützing) Tracanna ex Tell
United States, Massachusetts, Middlesex, Melrose

Miami University - Algae
Catalog #: 000210415
F.S. Collins #s.n. 03 August 1895
Ulothrix subtilis Kützing
United States, Massachusetts, Middlesex, Melrose

Yale University Herbarium
Catalog #: YU.106538
Frank Shipley Collins s.n. 22 August 1898
Ulothrix subtilis Kützing
United States, Massachusetts, Middlesex, Melrose; Melrose, MA