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

Brown University - Algae
Catalog #: ABRU00003015
I. Holden s.n.
Dichothrix orsiniana Bornet & Flahault
United States, Connecticut, Pequonnock River, Bridgeport, CT

Yale University Herbarium
Catalog #: YU.091487
Isaac Holden s.n. 00 July 1894
Dichothrix orsiniana Bornet & Flahault
United States, Connecticut, Bridgeport; Pequonnock River, Bridgeport, CT

Michigan State University Algae
Catalog #: MSC0182412
Isaac Holden #s.n. 00 July 1894
Dichothrix orsiniana Bornet & Flahault
United States, Connecticut, Fairfield, Pequinnock River, Bridgeport

Miami University - Algae
Catalog #: 000186819
Isaac Holden #s.n. 00 July 1894
Dichothrix orsiniana Bornet & Flahault
United States, Connecticut, Fairfield, Pequinnock River, Bridgeport