Baker, Pl. S. Colorad.
C.F. Baker, F.S. Earle, S.M. Tracy

Field Museum of Natural History Pteridophyte Collection
Catalog #: C0600761F
c2e59198-ea4e-4f82-9bc0-8b81cff8fe37
C. F. Baker #s.n. 25 June 1898
Equisetum laevigatum A. Braun
U.S.A., Colorado, Montezuma, Mancos; [precise locality unknown]