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

Brown University - Algae
Catalog #: ABRU00003268
I. Holden s.n. 05 June 1897
Rhizoclonium tortuosum (Dillwyn) Kützing
United States, Connecticut, Bridgeport, CT

Field Museum of Natural History
Catalog #: C0172675F
I. Holden #s.n. 05 June 1897
Rhizoclonium tortuosum (Dillwyn) Kützing
United States, Connecticut, Fairfield, Bridgeport

Miami University - Algae
Catalog #: 000187168
I. Holden #s.n. 05 June 1897
Rhizoclonium tortuosum (Dillwyn) Kützing
United States, Connecticut, Fairfield, Bridgeport

Yale University Herbarium
Catalog #: YU.091708
Isaac Holden s.n. 05 June 1897
Rhizoclonium tortuosum (Dillwyn) Kützing
United States, Connecticut, Fairfield, Bridgeport; Bridgeport, CT

University of Michigan
Catalog #: 731851
Isaac Holden #s.n. 05 June 1897
Rhizoclonium tortuosum (Dillwyn) Kützing
United States, Connecticut, Fairfield, Bridgeport

University of Michigan
Catalog #: 731874
Isaac Holden #s.n. 05 June 1897
Rhizoclonium tortuosum (Dillwyn) Kützing
United States, Connecticut, Fairfield, Bridgeport

Michigan State University Algae
Catalog #: MSC0184458
Isaac Holden #s.n. 05 June 1897
Rhizoclonium tortuosum f. polyrhiza (Dillwyn) Kützing
United States, Connecticut, Fairfield, Bridgeport