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

Brown University - Algae
Catalog #: ABRU00003087
I. Holden s.n. 16 May 1897
Enteromorpha prolifera (O.F.Müller) J.Agardh
United States, Connecticut, Fresh Pond, Stratford, CT

Field Museum of Natural History
Catalog #: C0526336F
I. Holden #s.n. 16 May 1897
Enteromorpha prolifera (O.F.Müller) J.Agardh
United States, Connecticut, Fairfield, "Fresh Pond", Stratford

Yale University Herbarium
Catalog #: YU.106511
Isaac Holden s.n. 16 May 1897
Enteromorpha prolifera (O.F.Müller) J.Agardh
United States, Connecticut, Fairfield, Stratford; Fresh Pond, Stratford, CT

University of Michigan
Catalog #: 735032
Isaac Holden #s.n. 16 May 1897
Ulva prolifera O.F.Müller
United States, Connecticut, "Fresh Pond" Stratford

University of Michigan
Catalog #: 735061
Isaac Holden #s.n. 16 May 1897
Ulva prolifera O.F.Müller
United States, Connecticut, "Fresh Pond" Stratford

Michigan State University Algae
Catalog #: MSC0185190
Isaac Holden #s.n. 16 May 1897
Ulva prolifera O.F.Müller
United States, Connecticut, Fairfield, "Fresh Pond" Stratford

Miami University - Algae
Catalog #: 000186876
Isaac Holden #s.n. 16 May 1897
Enteromorpha prolifera (O.F.Müller) J.Agardh
United States, Connecticut, "Fresh Pond" Stratford