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

Brown University - Algae
Catalog #: ABRU00005087
C. Bullard s.n. 17 May 1917
Cosmarium subspeciosum Nordstedt
United States, Massachusetts, Swingle Quarry, Quincy, MA

Yale University Herbarium
Catalog #: YU.095554
Charles Bullard s.n. 17 May 1917
Cosmarium subspeciosum Nordstedt
United States, Massachusetts, Quincy; Swingle Quarry, Quincy, MA

University Herbarium, University of California, Berkeley
Catalog #: UC1826044
Charles Bullard #s.n. 17 May 1917
Cosmarium subspeciosum Nordstedt
United States, Massachusetts, Norfolk, Swingle's Quarry, Quincy

University of Michigan
Catalog #: 736201
Charles Bullard #s.n. 17 May 1917
Cosmarium subspeciosum Nordstedt
United States, Massachusetts, Norfolk, Swingle Quarry, Quincy

University of Michigan
Catalog #: 736202
Charles Bullard #s.n. 17 May 1917
Cosmarium subspeciosum Nordstedt
United States, Massachusetts, Norfolk, Swingle Quarry, Quincy

Michigan State University Algae
Catalog #: MSC0182239
Charles Bullard #s.n. 17 May 1917
Cosmarium subspeciosum Nordstedt
United States, Massachusetts, Norfolk, Swingle Quarry, Quincy

Miami University - Algae
Catalog #: 000210306
Charles Bullard #s.n. 17 May 1917
Cosmarium subspeciosum Nordstedt
United States, Massachusetts, Norfolk, Swingle Quarry, Quincy