Tom Van Devender, Ana Lilia Reina, Juan Mario Cirett-Galan.
Mexico, Sonora, Santa Ana, Sierra Cucurpe, Vicinity of 19.0 mi. (30.6 km) (rd.) NE Hwy 15 at Estacion El Llano, 18.2 miles (29.3 km) (air) SE Santa Ana.
1100 meters
3610 feet
Shade of bedrock ledge on mesa in mountainous Sonoran upland Sonoran desertscrub.