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

Brown University - Algae
Catalog #: ABRU00004273
F. S. Collins s.n. 16 July 1908
Cladophora gracilis f. subflexuosa F.S.Collins
United States, Maine, Cumberland, Harpswell; South Harpswell, ME

Field Museum of Natural History
Catalog #: C0500203F
F. S. Collins #s.n. 16 July 1908
Cladophora gracilis f. subflexuosa F.S.Collins
United States, Maine, Cumberland, South Harpswell

University of Michigan
Catalog #: 684102
F.S. Collins #s.n. 16 July 1908
Cladophora sericea (Hudson) Kützing
United States, Maine, South Harpswell

University of Michigan
Catalog #: 684701
F.S. Collins #s.n. 16 July 1908
Cladophora flexuosa (O.F.Müller) Kützing
United States, Maine, Cumberland, South Harpswell

Michigan State University Algae
Catalog #: MSC0181949
F.S. Collins #s.n. 16 July 1908
Cladophora flexuosa (O.F.Müller) Kützing
United States, Maine, Cumberland, South Harpswell

Miami University - Algae
Catalog #: 000188661
F.S. Collins #s.n. 16 July 1908
Cladophora flexuosa (O.F.Müller) Kützing
United States, Maine, Cumberland, South Harpswell

Yale University Herbarium
Catalog #: YU.094580
Frank Shipley Collins s.n. 16 July 1908
Cladophora gracilis (Griffiths) Kützing
United States, Maine, Cumberland, Harpswell; South Harpswell, ME