Astragalus humistratus var. sonorae

A purple-flowered variety of A. humistratus found in southwestern New Mexico and extreme southeast Arizona.

An inflorescence on the upper part of the Pine Tree Trail loop at Aguirre Springs in the northeastern Organ Mountains, 17 Sep 2005.

Fruits on the upper part of the Pine Tree Trail, 17 Sep 2005.

A flowering stem on the upper part of the Pine Tree Trail, 17 Sep 2005.

Plant habit on the lower part of the Pine Tree Trail loop, 12 Apr 2007.