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

Brown University - Algae
Catalog #: ABRU00002802
I. Holden s.n. 06 May 1893
Batrachospermum pyramidale Sirodot
United States, Connecticut, Bridgeport, CT

Yale University Herbarium
Catalog #: YU.106451
Isaac Holden s.n. 06 May 1893
Batrachospermum pyramidale Sirodot
United States, Connecticut, Fairfield, Bridgeport; Bridgeport, CT

University of Michigan
Catalog #: 642922
Isaac Holden #s.n. 06 May 1893
Batrachospermum pyramidale Sirodot
United States, Connecticut, Bridgeport

University of Michigan
Catalog #: 642930
Isaac Holden #s.n. 06 May 1893
Batrachospermum pyramidale Sirodot
United States, Connecticut, Bridgeport

Field Museum of Natural History
Catalog #: C0504454F
Isaac Holden #s.n. 06 May 1893
Batrachospermum moniliforme Sirodot
United States, Connecticut, Fairfield, Bridgeport

Michigan State University Algae
Catalog #: MSC0181329
Isaac Holden #s.n. 06 May 1893
Batrachospermum gelatinosum (Linnaeus) De Candolle
United States, Connecticut, Fairfield, Bridgeport

Miami University - Algae
Catalog #: 000210367
Isaac Holden #s.n. 06 May 1893
Batrachospermum pyramidale Sirodot
United States, Connecticut, Bridgeport