Sclerocactus dawsoniae (Cactaceae), a New Species from Western Colorado, U.S.A.

Mitchell E. McGlaughlin; Samantha K. Naibauer

doi:10.3417/2024771

Mitchell E. McGlaughlin University of Northern Colorado https://orcid.org/0000-0001-6189-2450
Samantha K. Naibauer University of Northern Colorado

DOI: https://doi.org/10.3417/2024771

Keywords: Cactaceae, cactus, Colorado, new species, Sclerocactus dawsoniae

Abstract

Sclerocactus dawsoniae McGlaughlin & Naibauer (Cactaceae), a new species from western Colorado, is described. Sclerocactus dawsoniae is segregated from S. glaucus (K. Schum.) L. D. Benson, differing by having a smaller overall size, fewer spines per areole, an allopatric distribution, and substantial genetic differentiation.