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

Brown University - Algae
Catalog #: ABRU00003827
W. J. V. Osterhout s.n. 26 June 1902
Closterium lunula Ehrenberg & Hemprich ex Ralfs
United States, California, Botanical Laboratory, University of California, Berkeley, CA

Rutgers University, Chrysler Herbarium - Macroalgae Collection
Catalog #: CHRB0021481
W.J.V. Osterhout s.n. 26 June 1902
Closterium lunula Ehrenberg & Hemprich ex Ralfs
United States, California, Berkeley; Cultivated in Botanical Laboratory, University of CaliforniA

University of Michigan
Catalog #: 736012
W.J.V. Osterhout #s.n. 26 June 1902
Closterium lunula Ehrenberg & Hemprich ex Ralfs
United States, California, Alameda, Botanical Laboratory, University of California, Berkeley, CA

University of Michigan
Catalog #: 736019
W.J.V. Osterhout #s.n. 26 June 1902
Closterium lunula Ehrenberg & Hemprich ex Ralfs
United States, California, Alameda, Botanical Laboratory, University of California, Berkeley, CA

Michigan State University Algae
Catalog #: MSC0182055
W.J.V. Osterhout #s.n. 26 June 1902
Closterium lunula Ehrenberg & Hemprich ex Ralfs
United States, California, Alameda, Botanical Laboratory, University of California, Berkeley, CA

Miami University - Algae
Catalog #: 000188107
W.J.V. Osterhout #s.n. 26 June 1902
Closterium lunula Ehrenberg & Hemprich ex Ralfs
United States, California, Alameda, Botanical Laboratory, University of California, Berkeley, CA

Yale University Herbarium
Catalog #: YU.106605
Winthrop John Vanleuven Osterhout s.n. 26 June 1902
Closterium lunula Ehrenberg & Hemprich ex Ralfs
United States, California, Alameda, Berkeley; Botanical Laboratory, University of California, Berkeley, CA