Tilden, Amer. Algae
Tilden, J.E. [1-650]

University Herbarium, University of California, Berkeley
Catalog #: UC763682
J. E. Tilden #s.n. 04 August 1898
Zygnema chalybeospermum Hansgirg
Canada, British Columbia, Baird point, Strait of Juan de Fuca, Vancouver island, British Columbia.

Michigan State University Algae
Catalog #: MSC0185305
Josephine E. Tilden #s.n. 04 August 1898
Zygnema chalybeospermum Hansgirg
Canada, British Columbia, Baird Point, Strait of Juan de Fuca, Vancouver Island

Miami University - Algae
Catalog #: 000179670
Josephine E. Tilden #s.n. 04 August 1898
Zygnema chalybeospermum Hansgirg
Canada, British Columbia, Baird Point, Strait of Juan de Fuca, Vancouver Island