United States, Texas, Culberson, Guadalupe Mountains National Park. In mid Pine Springs Canyon, 1.2 miles NW of park headquarters.
Dioecious small trees to 12ft tall, trunk 3 inch diam. Limestone area with Pinus ponderosa, Quercus, Juniperus deppeana, Fallugia, Choisya, Arbutus, Rhus trilobata, Dasylirion, Acer macrophyllum, Fendlera, etc.