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

Brown University - Algae
Catalog #: ABRU00004913
C. Bullard s.n. 05 June 1916
Closterium venus Kützing ex Ralfs
United States, Massachusetts, Walden Pond, North Saugus, MA

Yale University Herbarium
Catalog #: YU.095382
Charles Bullard s.n. 05 June 1916
Closterium venus Kützing ex Ralfs
United States, Massachusetts, Walden Pond, North Saugus, MA

University of Michigan
Catalog #: 736059
Charles Bullard #s.n. 15 June 1916
Closterium venus Kützing ex Ralfs
United States, Massachusetts, Essex, Walden Pond, North Saugus

Michigan State University Algae
Catalog #: MSC0182070
Charles Bullard #s.n. 15 June 1916
Closterium venus Kützing ex Ralfs
United States, Massachusetts, Essex, Walden Pond, North Saugus

Miami University - Algae
Catalog #: 000210148
Charles Bullard #s.n. 15 June 1916
Closterium venus Kützing ex Ralfs
United States, Massachusetts, Essex, Walden Pond, North Saugus