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

Brown University - Algae
Catalog #: ABRU00004374
F. S. Collins s.n. 07 September 1909
Pediastrum tetras (Ehrenberg) Ralfs
United States, Massachusetts, Cedar Pond, Orleans, MA

University of Michigan
Catalog #: 730684
F.S. Collins #s.n. 07 September 1909
Pediastrum tetras (Ehrenberg) Ralfs
United States, Massachusetts, Barnstable, Cedar Pond, Orleans

University of Michigan
Catalog #: 730686
F.S. Collins #s.n. 07 September 1909
Pediastrum tetras (Ehrenberg) Ralfs
United States, Massachusetts, Barnstable, Cedar Pond, Orleans

Michigan State University Algae
Catalog #: MSC0184886
F.S. Collins #s.n. 07 September 1909
Stauridium tetras (Ehrenberg) E.Hegewald
United States, Massachusetts, Barnstable, Cedar Pond, Orleans

Miami University - Algae
Catalog #: 000189097
F.S. Collins #s.n.
Stauridium tetras (Ehrenberg) E.Hegewald
United States, Massachusetts, Barnstable, Cedar Pond, Orleans

Yale University Herbarium
Catalog #: YU.094681
Frank Shipley Collins s.n. 07 September 1909
Pediastrum tetras (Ehrenberg) Ralfs
United States, Massachusetts, Orleans; Cedar Pond, Orleans, MA