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

Brown University - Algae
Catalog #: ABRU00004422
F. S. Collins s.n. 06 July 1910
Pediastrum duplex Meyen
United States, Massachusetts, near Bay Shore, Eastham, MA

University of Michigan
Catalog #: 730666
F.S. Collins #s.n. 06 July 1910
Pediastrum duplex Meyen
United States, Massachusetts, Barnstable, Bay Shore, Eastham

University of Michigan
Catalog #: 730670
F.S. Collins #s.n. 06 July 1910
Pediastrum duplex Meyen
United States, Massachusetts, Barnstable, Bay Shore, Eastham

Michigan State University Algae
Catalog #: MSC0183941
F.S. Collins #s.n. 06 July 1910
Pediastrum duplex Meyen
United States, Massachusetts, Barnstable, Bay Shore, Eastham

Miami University - Algae
Catalog #: 000189196
F.S. Collins #s.n.
Pediastrum duplex Meyen
United States, Massachusetts, Barnstable, Bay Shore, Eastham

Yale University Herbarium
Catalog #: YU.094733
Frank Shipley Collins s.n. 06 July 1910
Pediastrum duplex Meyen
United States, Massachusetts, Barnstable, Eastham; near Bay Shore, Eastham, MA