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

Brown University - Algae
Catalog #: ABRU00004359
N. L. Gardner s.n. 24 January 1906
Phormidium fragile Gomont
United States, California, Physiological Laboratory of the University of California, Berkeley, CA

Rutgers University, Chrysler Herbarium - Macroalgae Collection
Catalog #: CHRB0021468
N.L. Gardner s.n. 24 January 1906
Leptolyngbya fragilis (Gomont) Anagnostidis & Komárek
United States, California, Berkeley; In the Physiological Laboratory of the University of California

Michigan State University Algae
Catalog #: MSC0183234
N.L. Gardner #s.n. 06 June 1889
Leptolyngbya fragilis (Gomont) Anagnostidis & Komárek
United States, California, Alameda, University of California, Berkeley

Miami University - Algae
Catalog #: 000210446
N.L. Gardner #s.n. 06 June 1889
Leptolyngbya fragilis (Gomont) Anagnostidis & Komárek
United States, California, Alameda, University of California, Berkeley

Yale University Herbarium
Catalog #: YU.094666
Nathaniel Lyon Gardner s.n. 24 January 1906
Phormidium fragile Gomont
United States, California, Berkely; Physiological Laboratory of the University of California, Berkeley, CA