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

Brown University - Algae
Catalog #: ABRU00004471
F. S. Collins s.n.
Oscillatoria margaritifera Kützing ex Gomont
United States, Massachusetts, Eastham, MA

Rutgers University, Chrysler Herbarium - Macroalgae Collection
Catalog #: CHRB0021457
F.S. Collins s.n. 00 September 1910
Oscillatoria margaritifera Kützing ex Gomont
United States, Massachusetts, Similar station, Eastham

Michigan State University Algae
Catalog #: MSC0183860
F.S. Collins #s.n. 00 September 1910
Oscillatoria margaritifera Kützing ex Gomont
United States, Massachusetts, Barnstable, Eastham

Miami University - Algae
Catalog #: 000210551
F.S. Collins #s.n. 00 September 1910
Oscillatoria margaritifera Kützing ex Gomont
United States, Massachusetts, Barnstable, Eastham

Yale University Herbarium
Catalog #: YU.094940
Frank Shipley Collins s.n. 05 September 1905
Oscillatoria margaritifera Kützing ex Gomont
United States, Massachusetts, Barnstable, Eastham; Eastham, MA