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

Brown University - Algae
Catalog #: ABRU00002964
C. P. Nott s.n.
Spirogyra porticalis (O.F.Müller) Dumortier
United States, Massachusetts, Falmouth, MA

University Herbarium, University of California, Berkeley
Catalog #: UC1827975
C. P. Nott #s.n. 00 July 1895
Spirogyra porticalis (O.F.Müller) Dumortier
United States, Massachusetts, Barnstable, Falmouth

University of Michigan
Catalog #: 736710
C.P. Nott #s.n. 00 July 1895
Spirogyra porticalis (O.F.Müller) Dumortier
United States, Massachusetts, Barnstable, Falmouth

University of Michigan
Catalog #: 736714
C.P. Nott #s.n. 00 July 1895
Spirogyra porticalis (O.F.Müller) Dumortier
United States, Massachusetts, Barnstable, Falmouth

Michigan State University Algae
Catalog #: MSC0184796
C.P. Nott #s.n. 00 July 1895
Spirogyra porticalis (O.F.Müller) Dumortier
United States, Massachusetts, Barnstable, Falmouth

Miami University - Algae
Catalog #: 000186776
C.P. Nott #s.n. 00 July 1895
Spirogyra porticalis (O.F.Müller) Dumortier
United States, Massachusetts, Barnstable, Falmouth

Drexel University, Academy of Natural Sciences - Algae
Catalog #: PH00147822
e6a58730-cef3-47f8-aeb1-6d003c6a2e31
C.P. Nott #s.n. 00 July 1895
Spirogyra porticalis (O.F.M
United States, Massachusetts, Barnstable, Falmouth

Yale University Herbarium
Catalog #: YU.091447
Charles Palmer Nott s.n. 00 July 1895
Spirogyra porticalis (O.F.Müller) Dumortier
United States, Massachusetts, Barnstable, Falmouth; Falmouth, MA