Collected
18 May 1995.
Arizona, United States
Locality: Santa Cruz Co., Along small canyon, ca. 1/2 mi. N of Rock Corral Canyon, Tumacacori Mts., W of Tumacacori (2.1 mi. W of I-19). Elevation 3750 ft.
Environment description: Semidesert grassland with Prosopis velutina, Mimosa dysocarpa, Dodonaea viscosa, Fouquieria splendens, Eysenhardtia orthocarpa.
Number of plants sampled: 20