Locality: Mexico, Sonora, Santa Cruz Municipio, Rancho los Fresnos. Nature Conservancy reserve in upper San Pedro River drainage, along US-Mexico border, just SW of Huachuca Mountains. Vouchers from permanent plots in burned and unburned treatments.
31.32055556 -110.36666666 WGS-84
Elevation: 1555 meters (5100ft)
Habitat: Grassland with isolated patches of oak-mesquite woodland.