Collected
26 June 1989.
Arizona, United States
Locality: Pima Co., Along shoulder of N side of I-10, 1.8 mi. E of Houghton Rd. 32 02'N, 110 43'W. Elevation 3200 ft.
Environment description: Disturbed vegetation of Prosopis velutina, Isomera tenuisecta, Aristida sp., Eragrostis.
Number of plants sampled: 1