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

Michigan State University
Catalog #: MSC0183731
Josephine E. Tilden #s.n. 20 August 1901
Nostoc sphaericum Vaucher ex Bornet & Flahault
United States, Minnesota, Saint Louis, Dalles of the Saint Louis river, Fond du Lac, Duluth

Miami University
Catalog #: 000185084
Josephine E. Tilden #s.n. 20 August 1901
Nostoc sphaericum Vaucher ex Bornet & Flahault
United States, Minnesota, Saint Louis, Dalles of the Saint Louis river, Fond du Lac, Duluth