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

Brown University - Algae
Catalog #: ABRU00002952
I. Holden s.n. 20 September 1896
Rivularia atra Roth ex Bornet & Flahault
United States, Connecticut, Charles Island, near Milford, CT

Yale University Herbarium
Catalog #: YU.106489
Isaac Holden s.n. 20 September 1896
Rivularia atra Roth ex Bornet & Flahault
United States, Connecticut, New Haven, Milford; Charles Island, Milford, CT

Michigan State University Algae
Catalog #: MSC0184478
Isaac Holden #s.n. 20 September 1896
Rivularia atra Roth ex Bornet & Flahault
United States, Connecticut, New Haven, Charles Island, near Milford

Miami University - Algae
Catalog #: 000210392
Isaac Holden #s.n. 20 September 1896
Rivularia atra Roth ex Bornet & Flahault
United States, Connecticut, New Haven, Charles Island, near Milford