Herbarium of the University of California. Berkeley

Field Museum of Natural History Pteridophyte Collection
Catalog #: C0600238F
7821186b-eac4-4a0f-8524-8cc7b879b0ac
E. B. Copeland #s.n. 28 June 1930
Equisetum arvense L.
U.S.A., California, Butte, Jonesville