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

Brown University - Algae
Catalog #: ABRU00004297
F. S. Collins s.n. 20 September 1908
Oscillatoria irrigua Kützing ex Gomont
United States, Massachusetts, Danvers, MA

Rutgers University, Chrysler Herbarium - Macroalgae Collection
Catalog #: CHRB0012500
F. S. Collins #1553 20 September 1908
Phormidium irriguum (Kützing ex Gomont) Anagnostidis & Komárek
United States, Massachusetts, Essex, Danvers; in a mill pond

Michigan State University Algae
Catalog #: MSC0184003
F.S. Collins #s.n. 20 September 1908
Phormidium irriguum (Kützing ex Gomont) Anagnostidis & Komárek
United States, Massachusetts, Essex, Danvers

Miami University - Algae
Catalog #: 000189026
F.S. Collins #s.n. 20 September 1908
Phormidium irriguum (Kützing ex Gomont) Anagnostidis & Komárek
United States, Massachusetts, Essex, Danvers

Yale University Herbarium
Catalog #: YU.094604
Frank Shipley Collins s.n. 20 September 1908
Oscillatoria irrigua Kützing ex Gomont
United States, Massachusetts, Danvers; Danvers, MA