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

Brown University - Algae
Catalog #: ABRU00002797
I. Holden s.n.
Batrachospermum ectocarpum Sirodot
United States, Connecticut, Bridgeport, CT

Yale University Herbarium
Catalog #: YU.091263
Isaac Holden s.n.
Batrachospermum ectocarpum Sirodot
United States, Connecticut, Fairfield, Bridgeport; Bridgeport, CT

University of Michigan
Catalog #: 642669
Isaac Holden #s.n.
Batrachospermum ectocarpum Sirodot
United States, Connecticut, Bridgeport

University of Michigan
Catalog #: 642880
Isaac Holden #s.n. 00 March 1890
Batrachospermum gelatinosum (Linnaeus) De Candolle
United States, Connecticut, Bridgeport

Field Museum of Natural History
Catalog #: C0504329F
Isaac Holden #s.n.
Batrachospermum moniliforme Sirodot
United States, Connecticut, Fairfield, Bridgeport

University Herbarium, University of California, Berkeley
Catalog #: UC1836709
Isaac Holden #s.n.
Batrachospermum gelatinosum (Linnaeus) De Candolle
United States, Connecticut, Fairfield, Bridgeport

Michigan State University Algae
Catalog #: MSC0184698
Isaac Holden #s.n.
Sheathia boryana (Sirodot) Salomaki & M.L.Vis, 2014
United States, Connecticut, Fairfield, Bridgeport

Miami University - Algae
Catalog #: 000186582
Isaac Holden #s.n.
Batrachospermum ectocarpum Sirodot
United States, Connecticut, Bridgeport