Collected
20 April 1990.
Arizona, United States
Locality: Pima Co., E of Ragged Top Mountain, Avra Valley (ca. 10 mi. by road, W of Anway Rd.). Elevation 2200 feet.
Environment description: Sandy and gravelly soil in along arroyo. Arizona Upland Subdivision Sonoran Desertscrub with Acacia constricta, A. greggii, Cercidium microphyllum, Olneya tesota, Delphinium scaposum.