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

Brown University - Algae
Catalog #: ABRU00003308
I. Holden s.n. 25 August 1895
Nostoc pruniforme C.Agardh ex Bornet & Flahault
United States, Connecticut, Salisbury, CT

Miami University - Algae
Catalog #: 000187203
I. Holden s.n. 25 August 1895
Nostoc pruniforme C.Agardh ex Bornet & Flahault
United States, Connecticut, Salisbury, CT

Yale University Herbarium
Catalog #: YU.091740
Isaac Holden s.n. 25 August 1895
Nostoc pruniforme C.Agardh ex Bornet & Flahault
United States, Connecticut, Salisbury, CT