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

Brown University - Algae
Catalog #: ABRU00004584
C. Bullard s.n. 21 September 1911
Closterium lunula Ehrenberg & Hemprich ex Ralfs
United States, Massachusetts, Round Pond, Tewksbury, MA

Yale University Herbarium
Catalog #: YU.095055
Charles Bullard s.n. 21 September 1911
Closterium lunula Ehrenberg & Hemprich ex Ralfs
United States, Massachusetts, Round Pond, Tewksbury, MA

University of Michigan
Catalog #: 736013
Charles Bullard #s.n. 21 September 1911
Closterium lunula Ehrenberg & Hemprich ex Ralfs
United States, Massachusetts, Middlesex, Round Pond, Tewksbury

University of Michigan
Catalog #: 736017
Charles Bullard #s.n. 21 September 1911
Closterium lunula Ehrenberg & Hemprich ex Ralfs
United States, Massachusetts, Middlesex, Round Pond, Tewksbury

Michigan State University Algae
Catalog #: MSC0182056
Charles Bullard #s.n. 21 September 1911
Closterium lunula Ehrenberg & Hemprich ex Ralfs
United States, Massachusetts, Middlesex, Round Pond, Tewksbury

Miami University - Algae
Catalog #: 000189236
Charles Bullard #s.n. 21 September 1911
Closterium lunula Ehrenberg & Hemprich ex Ralfs
United States, Massachusetts, Middlesex, Round Pond, Tewksbury