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

University of North Carolina at Chapel Hill Herbarium; Max & Fran Hommersand Algae Herbarium: Algae
Catalog #: NCU-A-0004985
Holden, Isaac #P.B.-A. 1330 00 December 1890
Chaetophora incrassata Hazen
United States, Connecticut, Fairfield, Bridgeport; Pequonnock River, Bridgeport, Connecticut

Brown University - Algae
Catalog #: ABRU00004055
I. Holden s.n.
Chaetophora incrassata Hazen
United States, Connecticut, Pequonnock River, Bridgeport, CT

Field Museum of Natural History
Catalog #: C0527699F
I. Holden #s.n. 00 December 1890
Chaetophora incrassata Hazen
United States, Connecticut, Fairfield, Pequonnock River, Bridgeport

Yale University Herbarium
Catalog #: YU.094363
Isaac Holden s.n. 00 December 1890
Chaetophora incrassata Hazen
United States, Connecticut, Bridgeport; Pequonnock River, Bridgeport, CT

University of Michigan
Catalog #: 683621
Isaac Holden #s.n. 00 December 1890
Chaetophora lobata Schrank
United States, Connecticut, Fairfield, Pequonnock River, Bridgeport

University of Michigan
Catalog #: 683630
Isaac Holden #s.n. 00 December 1890
Chaetophora lobata Schrank
United States, Connecticut, Fairfield, Pequonnock River, Bridgeport

Michigan State University Algae
Catalog #: MSC0181703
Isaac Holden #s.n. 00 December 1890
Chaetophora incrassata Hazen
United States, Connecticut, Fairfield, Pequonnock River, Bridgeport

Miami University - Algae
Catalog #: 000188332
Isaac Holden #s.n. 00 December 1890
Chaetophora incrassta
United States, Connecticut, Fairfield, Pequonnock River, Bridgeport

Drexel University, Academy of Natural Sciences - Algae
Catalog #: PH00148120
ee83cf70-63a5-4699-99da-2b1e98f6a7ab
Isaac Holden #s.n. 00 December 1890
Chaetophora incrassata Hazen
United States, Connecticut, Fairfield, Pequonnock River, Bridgeport