Collected
22 November 1990.
Sonora, Mexico
Locality: Hwy 15, 0.5 mi. N of km 96 marker, N of Hermosillo.
Environment description: Sandy soil. Distrubed vegetation along W shoulder of highway growing with Penisetum ciliare, Dalea sp. Adjacent vegetation is Plains of Sonora Subdivision Sonoran Desertscrub.
Number of plants sampled: 6