Locality:
Mexico, Zacatecas, Llano de los Tretos; 1 mi W of the road jct, 18 mi S of Valparaiso on the road to Mezquitic Jal., road to Huejuquilla el Alto
22.5106 -103.565
Elevation:
2000-2100 meters (6560-6888ft)
Habitat:
Stream valley and nearby rocky oak-covered mountainsides