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

Brown University - Algae
Catalog #: ABRU00004931
N. L. Gardner s.n.
Coelastrum microporum Nägeli
United States, California, Botanical Laboratory, University of California, Berkeley, CA

University of Michigan
Catalog #: 727103
N.L. Gardner #s.n. 00 March 1916
Coelastrum microporum Nägeli
United States, California, Alameda, Botanical Laboratory, University of California, Berkeley

Michigan State University Algae
Catalog #: MSC0182102
N.L. Gardner #s.n. 00 March 1916
Coelastrum microporum Nägeli
United States, California, Alameda, Botanical Laboratory, University of California, Berkeley

Miami University - Algae
Catalog #: 000210167
N.L. Gardner #s.n. 00 March 1916
Coelastrum microporum Nägeli
United States, California, Alameda, Botanical Laboratory, University of California, Berkeley

Yale University Herbarium
Catalog #: YU.095401
Nathaniel Lyon Gardner s.n.
Coelastrum microporum Nägeli
United States, California, Alameda, Berkeley; Botanical Laboratory, University of California, Berkeley, CA