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

Brown University - Algae
Catalog #: ABRU00003204
I. Holden s.n. 13 November 1898
Cladophora magdalenae Harvey
United States, Connecticut, Charles Island, near Milford, CT

Yale University Herbarium
Catalog #: YU.091655
Isaac Holden s.n. 13 November 1898
Cladophora magdalenae Harvey
United States, Connecticut, New Haven, Milford; Charles Island, Milford, CT

University of Michigan
Catalog #: 684173
Isaac Holden #s.n. 13 November 1898
Cladophora magdalenae Harvey
United States, Connecticut, New Haven, Charles Island, near Milford

University of Michigan
Catalog #: 684174
Isaac Holden #s.n. 13 November 1898
Cladophora magdalenae Harvey
United States, Connecticut, New Haven, Charles Island, near Milford

Michigan State University Algae
Catalog #: MSC0181935
Isaac Holden #s.n. 13 November 1898
Cladophora albida (Nees) Kutzing
United States, Connecticut, New Haven, Charles Island, near Milford

Miami University - Algae
Catalog #: 000187110
Isaac Holden #s.n. 13 November 1898
Cladophora magdalenae var. torta
United States, Connecticut, New Haven, Charles Island, near Milford