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

Brown University - Algae
Catalog #: ABRU00003834
I. Holden s.n. 18 March 1894
Ulothrix flacca (Dillwyn) Thuret
United States, Connecticut, Seaside Park, Bridgeport, CT

Yale University Herbarium
Catalog #: YU.092206
Isaac Holden s.n. 18 March 1894
Ulothrix flacca (Dillwyn) Thuret
United States, Connecticut, Seaside Park, Bridgeport, CT

University of Michigan
Catalog #: 733047
Isaac Holden #s.n. 18 March 1894
Ulothrix flacca (Dillwyn) Thuret
United States, Connecticut, Fairfield, Seaside Park, Bridgeport

University of Michigan
Catalog #: 733062
Isaac Holden #s.n. 18 March 1894
Ulothrix flacca (Dillwyn) Thuret
United States, Connecticut, Fairfield, Seaside Park, Bridgeport

Michigan State University Algae
Catalog #: MSC0185099
Isaac Holden #s.n. 18 March 1894
Ulothrix flacca (Dillwyn) Thuret
United States, Connecticut, Fairfield, Seaside Park, Bridgeport

Miami University - Algae
Catalog #: 000188114
Isaac Holden #s.n. 18 March 1894
Ulothrix flacca (Dillwyn) Thuret
United States, Connecticut, Fairfield, Seaside Park, Bridgeport

Drexel University, Academy of Natural Sciences - Algae
Catalog #: PH00212260
46e67579-635f-4863-97b7-2b805d86d195
Isaac Holden #s.n. 18 March 1894
Ulothrix flacca (Dillwyn) Thuret
United States, Connecticut, Fairfield, Seaside Park, Bridgeport; 41.159761 -73.191374