Mexico, Sonora, Municipio de Cananea, 10.9 km (by air) WNW of Cananea, along road to Observatorion Astrofisico Guillermoa Haro, Sierra La Mariquita, rocky slope.
31.051389 -110.385
31° 3' 5" N 110° 23' 6" W
2445 meters (8020ft)
Pine-oak forest.
Solitary herbaceous perennial on rock face in road cut; flowers yellow.