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

Brown University - Algae
Catalog #: ABRU00003933
F. S. Collins s.n. 11 June 1904
Zygnema pectinatum (Vaucher) C.Agardh
United States, Massachusetts, Winchester North Reservoir, MA

University of Michigan
Catalog #: 736793
F.S. Collins #s.n. 11 June 1904
Zygnema pectinatum (Vaucher) C.Agardh
United States, Massachusetts, Middlesex, Winchester North Reservoir

University of Michigan
Catalog #: 736795
F.S. Collins #s.n. 11 June 1904
Zygnema pectinatum (Vaucher) C.Agardh
United States, Massachusetts, Middlesex, Winchester North Reservoir

Michigan State University Algae
Catalog #: MSC0185311
F.S. Collins #s.n. 11 June 1904
Zygnema pectinatum (Vaucher) C.Agardh
United States, Massachusetts, Middlesex, Winchester North Reservoir

Miami University - Algae
Catalog #: 000188212
F.S. Collins #s.n.
Zygnema pectinatum (Vaucher) C.Agardh
United States, Massachusetts, Middlesex, Winchester North Reservoir

Drexel University, Academy of Natural Sciences - Algae
Catalog #: PH00147938
2a9057a9-6baa-4417-9fb4-4f16045e92fb
F.S. Collins #s.n. 11 June 1904
Zygnema C.Agardh, 1817
United States, Massachusetts, Middlesex, Winchester North Reservoir

Yale University Herbarium
Catalog #: YU.094172
Frank Shipley Collins s.n. 11 June 1904
Zygnema pectinatum (Vaucher) C.Agardh
United States, Massachusetts, Winchester North Reservoir, MA

University Herbarium, University of California, Berkeley
Catalog #: UC1882665
I. Holden #s.n. 24 August 1896
Sirodotia suecica Kylin
United States, New York, Hamilton, Outlet of Oxbow Lake.