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

Brown University - Algae
Catalog #: ABRU00003768
F. S. Collins s.n. 28 March 1903
Conferva utriculosa Kützing
United States, Massachusetts, Medford, MA

Miami University - Algae
Catalog #: 000188051
F. S. Collins #s.n. 28 March 1903
Conferva utriculosa Kützing
United States, Massachusetts, Medford, MA

Michigan State University Algae
Catalog #: MSC0182167
F.S Collins #s.n. 28 March 1903
Conferva utriculosa Kützing
United States, Massachusetts, Middlesex, Medford

University of Michigan
Catalog #: 736969
F.S. Collins #s.n. 28 March 1903
Tribonema utriculosum (Kützing) Hazen
United States, Massachusetts, Middlesex, Medford, MA

University of Michigan
Catalog #: 736972
F.S. Collins #s.n. 28 March 1903
Tribonema utriculosum (Kützing) Hazen
United States, Massachusetts, Middlesex, Medford

Miami University - Algae
Catalog #: 000188052
F.S. Collins #s.n. 28 March 1903
Conferva utriculosa Kützing
United States, Massachusetts, Middlesex, Medford, MA

Yale University Herbarium
Catalog #: YU.092154
Frank Shipley Collins s.n. 28 March 1903
Conferva utriculosa Kützing
United States, Massachusetts, Middlesex, Medford; Medford, MA