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

Brown University - Algae
Catalog #: ABRU00004271
F. S. Collins s.n. 11 July 1908
Cladophora gracilis (Griffiths) Kützing
United States, Maine, Cumberland, Harpswell; Harpswell, ME

Field Museum of Natural History
Catalog #: C0530041F
F. S. Collins #s.n. 11 July 1908
Cladophora gracilis (Griffiths) Kützing
United States, Maine, Cumberland, Harpswell

Drexel University, Academy of Natural Sciences - Algae
Catalog #: PH00204878
dfeb3ab5-dbc0-4f13-97e8-697789e89c8a
F. S. Collins #s.n. 11 July 1908
Cladophora gracilis (Griffiths) K
United States, Maine, Cumberland, Harpswell

University of Michigan
Catalog #: 684104
F.S. Collins #s.n. 11 July 1908
Cladophora gracilis (Griffiths) Kützing
United States, Maine, Cumberland, Harpswell

University of Michigan
Catalog #: 684671
F.S. Collins #s.n. 11 July 1908
Cladophora flexuosa (O.F.Müller) Kützing
United States, Maine, Cumberland, Harpswell

Michigan State University Algae
Catalog #: MSC0181948
F.S. Collins #s.n. 11 July 1908
Cladophora flexuosa (O.F.Müller) Kützing
United States, Maine, Cumberland, Harpswell

Miami University - Algae
Catalog #: 000188659
F.S. Collins #s.n.
Cladophora flexuosa (O.F.Müller) Kützing
United States, Maine, Cumberland, Harpswell

Yale University Herbarium
Catalog #: YU.094578
Frank Shipley Collins s.n. 11 July 1908
Cladophora gracilis (Griffiths) Kützing
United States, Maine, Cumberland, Harpswell; Harpswell, ME