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

Brown University - Algae
Catalog #: ABRU00002847
I. Holden s.n.
Cladophora rudolphiana (C.Agardh) Kützing
United States, Connecticut, Fresh Pond, Stratford, CT

Field Museum of Natural History
Catalog #: C0530205F
I. Holden #s.n. 00 May 1891
Cladophora pulverulenta (Mertens) Phinney
United States, Connecticut, Fairfield, Fresh Pond, Stratford

Drexel University, Academy of Natural Sciences - Algae
Catalog #: PH00204883
15b36231-f74c-4e0c-9fac-b83896640ee9
I. Holden #s.n. 00 May 1891
Cladophora gracilis (Griffiths) K
United States, Connecticut, Fairfield, Stratford

Yale University Herbarium
Catalog #: YU.091348
Isaac Holden s.n. 00 May 1891
Cladophora rudolphiana (C.Agardh) Kützing
United States, Connecticut, Fairfield, Stratford; Fresh Pond, Stratford, CT

University of Michigan
Catalog #: 725079
Isaac Holden #s.n. 00 May 1891
Cladophora rudolphiana (C.Agardh) Kützing
United States, Connecticut, Fairfield, Fresh Pond, Stratford

University of Michigan
Catalog #: 725082
Isaac Holden #s.n. 00 May 1891
Cladophora rudolphiana (C.Agardh) Kützing
United States, Connecticut, Fairfield, Fresh Pond, Stratford

Michigan State University Algae
Catalog #: MSC0182012
Isaac Holden #s.n. 00 May 1891
Cladophora sericea (Hudson) Kützing
United States, Connecticut, Fairfield, Fresh Pond, Stratford

Miami University - Algae
Catalog #: 000186673
Isaac Holden #s.n. 00 May 1891
Cladophora rudolphiana (C.Agardh) Kützing
United States, Connecticut, Fairfield, Fresh Pond, Stratford