Collected
04 October 1989.
Arizona, United States
Locality: Pima Co., 0.5 mi. S of road to Madera Canyon on paved, dead end road which is 0.6 mi. E of railroad tracks at Continental. Elevation 2900 ft.
Environment description: Disturbed area along road cut. Adjacent vegetation contains Prosopis velutina, Acacia constricta, Acacia greggii, Isomera tenuisecta.