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

Brown University - Algae
Catalog #: ABRU00004095
N. L. Gardner s.n. 12 May 1906
Spirogyra stictica (Smith) Wille
United States, California, Presidio, San Francisco, CA

University of Michigan
Catalog #: 736738
N.L. Gardner #s.n. 12 May 1906
Spirogyra stictica (Smith) Wille
United States, California, San Francisco, Presidio

University of Michigan
Catalog #: 736739
N.L. Gardner #s.n. 12 May 1906
Spirogyra stictica (Smith) Wille
United States, California, San Francisco, Presidio

Michigan State University Algae
Catalog #: MSC0184710
N.L. Gardner #s.n. 12 May 1906
Sirogonium sticticum (Smith) Kützing
United States, California, San Francisco, Presidio

Miami University - Algae
Catalog #: 000188435
N.L. Gardner #s.n.
Sirogonium sticticum (Smith) Kützing
United States, California, San Francisco, Presidio

Drexel University, Academy of Natural Sciences - Algae
Catalog #: PH00147854
e85b16a5-5720-4a0e-962d-c0be02f3f8ae
N.L. Gardner #s.n. 12 May 1906
Spirogyra stictica (Smith) Wille
United States, California, San Francisco, Presidio

Yale University Herbarium
Catalog #: YU.094403
Nathaniel Lyon Gardner s.n. 12 May 1906
Spirogyra stictica (Smith) Wille
United States, California, San Francisco; Presidio, San Francisco, CA