Mexico, Sonora, Santa Ana, 2 miles (3.2 km) (air) west of the Sierra Cucurpe, 12.8 mi. (20.6 km) (rd.) NE Hwy 15 at Estacion El Llano, 14.2 miles (22.7 km) (air) SE Santa Ana.
30.41784 -110.92234 +-100m. NAD 83
873 meters
2864 feet
Along artificially created stream in gently rolling foothill paloverde-saguaro dominated Sonoran upland Sonoran desertscrub.
Keys readily to V. neomexicana in AZ Flora, and in Flora Neomexicana except that later describes stems as 'loosely hirsute' and examples in collection appear to have spreading hairs. This example has appressed hairs.