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

Field Museum of Natural History
Catalog #: C0527782F
Josephine E. Tilden #s.n. 19 August 1901
Chaetophora pisiformis (Roth) C.Agardh
United States, Minnesota, Saint Louis, bank of St. Louis River, Fond Du Lac, Duluth

Michigan State University Algae
Catalog #: MSC0181706
Josephine E. Tilden #s.n. 19 August 1901
Chaetophora pisiformis (Roth) C.Agardh
United States, Minnesota, Saint Louis, Bank of Saint Louis river, Fond du Lac, Duluth

Miami University - Algae
Catalog #: 000185047
Josephine E. Tilden #s.n. 19 August 1901
Chaetophora pisiformis (Roth) C.Agardh
United States, Minnesota, Saint Louis, Bank of Saint Louis river, Fond du Lac, Duluth

Butler University
Catalog #: 504442
Josephine E. Tilden #s.n. 19 August 1901
Chaetophora pisiformis (Roth) C.Agardh
United States, Minnesota, Bank of St. Louis river, Fond du Lac, Duluth