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

Brown University - Algae
Catalog #: ABRU00003086
I. Holden s.n. 23 May 1897
Enteromorpha prolifera (O.F.Müller) J.Agardh
United States, Connecticut, Bridgeport, CT

Field Museum of Natural History
Catalog #: C0526335F
I. Holden #s.n. 23 May 1897
Enteromorpha prolifera (O.F.Müller) J.Agardh
United States, Connecticut, Fairfield, Bridgeport

Miami University - Algae
Catalog #: 000186875
I. Holden #s.n. 23 May 1897
Enteromorpha prolifera (O.F.Müller) J.Agardh
United States, Connecticut, Fairfield, Bridgeport

Yale University Herbarium
Catalog #: YU.106510
Isaac Holden s.n. 23 May 1897
Enteromorpha prolifera (O.F.Müller) J.Agardh
United States, Connecticut, Fairfield, Bridgeport; Bridgeport, CT

University of Michigan
Catalog #: 735059
Isaac Holden #s.n. 23 May 1897
Ulva prolifera O.F.Müller
United States, Connecticut, Fairfield, Bridgeport

University of Michigan
Catalog #: 735063
Isaac Holden #s.n. 23 May 1897
Ulva prolifera O.F.Müller
United States, Connecticut, Fairfield, Bridgeport

Michigan State University Algae
Catalog #: MSC0185189
Isaac Holden #s.n. 23 May 1897
Ulva prolifera O.F.Müller
United States, Connecticut, Fairfield, Bridgeport