Nabhan et al 2015

Duration: Perennial Nativity: Native Lifeform: Subshrub General: Shrubby perennial, to 0.7 m, with slender but strong stems that only branch at the base, the stems are slightly hairy and usually one to a few stems from the root crown. Leaves: The leaves are opposite and oval to elliptic, tapering to a tip, with fine hairs along the midrib and veins below. Flowers: The solitary umbels are at the end of the stem and have small white flowers. Fruits: The upright pods are 3.5-5 inches long, smooth and spindle shaped, narrowing at either end. Ecology: Found in canyons and along arroyos in dry rocky regions, from 5,000-6,000 ft (1524-1829 m); flowers May through August. Distribution: From central Texas west to the Edwards Plateau and south into Coahuila and the Chihuahuan Desert as far south as Durango. Synonyms: None Editor: AHazelton 2015