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

Brown University - Algae
Catalog #: ABRU00003941
N. L. Gardner s.n. 03 February 1904
Conferva utriculosa Kützing
United States, California, Presidio, San Francisco, CA

University of Michigan
Catalog #: 736975
N.L. Gardner #s.n. 03 February 1904
Tribonema utriculosum (Kützing) Hazen
United States, California, San Francisco, Presidio

University of Michigan
Catalog #: 736980
N.L. Gardner #s.n. 03 February 1904
Tribonema bombycina (C.Agardh) Derbès & Solier
United States, California, San Francisco, Presidio

Michigan State University Algae
Catalog #: MSC0182170
N.L. Gardner #s.n. 03 February 1904
Conferva utriculosa Kützing
United States, California, San Francisco, Presidio

Miami University - Algae
Catalog #: 000188219
N.L. Gardner #s.n. 03 February 1904
Conferva utriculosa Kützing
United States, California, San Francisco, Presidio

Yale University Herbarium
Catalog #: YU.106612
Nathaniel Lyon Gardner s.n. 03 February 1904
Conferva utriculosa Kützing
United States, California, San Francisco; Presidio, San Francisco, CA