Agastache sandersiana (Lamiaceae): A new species from northwestern Durango, Mexico

摘要

We describe and illustrate Agastache sandersiana as a new species from northwestern Durango. This is a narrow endemic that clearly differs from all other species in the genus by leaf size, shape, and pubescence; inflorescence architecture; calyx tube length; corolla color; and corolla tube length. Additionally, an identification key to the Agastache species occurring in Durango, Mexico is provided.