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

Brown University - Algae
Catalog #: ABRU00004748
C. Bullard s.n. 29 August 1912
Closterium gracile Brébisson ex Ralfs
United States, Massachusetts, Wilmington Junction, MA

Yale University Herbarium
Catalog #: YU.095216
Charles Bullard s.n. 29 August 1912
Closterium gracile Brébisson ex Ralfs
United States, Massachusetts, Wilmington Junction, MA

University of Michigan
Catalog #: 735983
Charles Bullard #s.n. 29 August 1912
Closterium gracile Brébisson ex Ralfs
United States, Massachusetts, Middlesex, Wilmington Junction

University of Michigan
Catalog #: 735985
Charles Bullard #s.n. 29 August 1912
Closterium gracile Brébisson ex Ralfs
United States, Massachusetts, Middlesex, Wilmington Junction

Michigan State University Algae
Catalog #: MSC0182045
Charles Bullard #s.n. 29 August 1912
Closterium gracile Brébisson ex Ralfs
United States, Massachusetts, Middlesex, Wilmington Junction

Miami University - Algae
Catalog #: 000196594
Charles Bullard #s.n.
Closterium gracile Brébisson ex Ralfs
United States, Massachusetts, Middlesex, Wilmington Junction