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

Brown University - Algae
Catalog #: ABRU00004753
C. Bullard s.n. 25 May 1912
Closterium moniliferum Ehrenberg ex Ralfs
United States, Massachusetts, Cold Spring Brook, Newton, MA

Yale University Herbarium
Catalog #: YU.095221
Charles Bullard s.n. 12 September 1912
Closterium pritchardianum W.Archer
United States, New Hampshire, Grafton, Bethlehem; Bethlehem Junction, NH

University of Michigan
Catalog #: 736033
Charles Bullard #s.n. 25 May 1912
Closterium pritchardianum W.Archer
United States, Massachusetts, Middlesex, Cold Spring Brook, Newton, MA

University of Michigan
Catalog #: 736034
Charles Bullard #s.n. 25 May 1912
Closterium pritchardianum W.Archer
United States, Massachusetts, Middlesex, Cold Spring Brook, Newton, MA

Michigan State University Algae
Catalog #: MSC0182062
Charles Bullard #s.n. 25 May 1912
Closterium pritchardianum W.Archer
United States, Massachusetts, Middlesex, Cold Spring Brook, Newton, MA

Miami University - Algae
Catalog #: 000196600
Charles Bullard #s.n. 25 May 1912
Closterium pritchardianum W.Archer
United States, Massachusetts, Middlesex, Cold Spring Brook, Newton, MA