Locality:
Mexico, Baja California Sur, Along Rte 1, 31 km W of San Ignacio on NE slope of a small mountain at junction of road to Punta Abreojos. Border of Southern Vizcaino and Northern Magdalena regions of the Sonoran Desert (Bursera mi-crophylla, Lemaireocereus thurberi, Lophocereus schottii, Pachycereuspringlii, etc.).