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

Brown University - Algae
Catalog #: ABRU00004321
F. S. Collins s.n. 07 September 1908
Pediastrum duplex Meyen
United States, Massachusetts, Round Pond, Tewksbury, MA

University Herbarium, University of California, Berkeley
Catalog #: UC751168
F. S. Collins #s.n. 07 September 1908
Pediastrum duplex Meyen
United States, Massachusetts, Middlesex, Round Pond, Tewsbury

University of Michigan
Catalog #: 730667
F.S. Collins #s.n. 07 September 1908
Pediastrum duplex Meyen
United States, Massachusetts, Middlesex, Round Pond, Tewksbury

University of Michigan
Catalog #: 730671
F.S. Collins #s.n. 07 September 1908
Pediastrum duplex Meyen
United States, Massachusetts, Middlesex, Round Pond, Tewksbury

Michigan State University Algae
Catalog #: MSC0183940
F.S. Collins #s.n. 07 September 1908
Pediastrum duplex Meyen
United States, Massachusetts, Middlesex, Round Pond, Tewksbury

Miami University - Algae
Catalog #: 000189047
F.S. Collins #s.n.
Pediastrum duplex Meyen
United States, Massachusetts, Middlesex, Round Pond, Tewksbury

Yale University Herbarium
Catalog #: YU.094629
Frank Shipley Collins s.n. 07 September 1908
Pediastrum duplex Meyen
United States, Massachusetts, Round Pond, Tewksbury, MA