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

Brown University - Algae
Catalog #: ABRU00002545
I. Holden s.n. 07 March 1891
Ulothrix isogona (J.E.Smith) Thuret
United States, Connecticut, Bridgeport, CT

Miami University - Algae
Catalog #: 000186417
I. Holden #s.n. 07 March 1891
Ulothrix isogona (J.E.Smith) Thuret
United States, Connecticut, Fairfield, Bridgeport

Yale University Herbarium
Catalog #: YU.091096
Isaac Holden s.n. 07 March 1891
Ulothrix isogona (J.E.Smith) Thuret
United States, Connecticut, Fairfield, Bridgeport; Bridgeport, CT

University of Michigan
Catalog #: 732967
Isaac Holden #s.n. 07 March 1891
Ulothrix isogona (J.E.Smith) Thuret
United States, Connecticut, Fairfield, Bridgeport

University of Michigan
Catalog #: 732968
Isaac Holden #s.n. 07 March 1891
Ulothrix isogona (J.E.Smith) Thuret
United States, Connecticut, Fairfield, Bridgeport

Michigan State University Algae
Catalog #: MSC0185102
Isaac Holden #s.n. 07 March 1891
Ulothrix isogona (J.E.Smith) Thuret
United States, Connecticut, Fairfield, Bridgeport

Drexel University, Academy of Natural Sciences - Algae
Catalog #: PH00212288
889b7e5d-e545-4b25-8935-5a34a592d794
Isaac Holden #s.n. 07 March 1891
Ulothrix isogona (J.E.Smith) Thuret
United States, Connecticut, Fairfield, Bridgeport

Drexel University, Academy of Natural Sciences - Algae
Catalog #: PH00217469
3e91b37a-bd9c-41aa-9ae9-4305d6d6cb6c
W. A. Setchel; R. E. Gibbs #s.n. 08 January 1899
Gigartina radula (Esper) J.Agardh
United States, California, Monterey, Pyramid Point