Mexico, Durango, Mpio. De Durango, eastern edge of the Sierra Madre Occidental, ca. 6 miles W of Durango along Hwy 40, mesa about 3 miles due N of Presa Guadalupe Victoria.
23.983333 -104.75
23d 59m N; 104d 45m W
2103 meters
6900ft.
Rocky volcanic flats
Quercus, Acacia, Opuntia.
Uncommon, 12 ft. tall, arborescent, single-trunked yucca, flowers white.