United States, Texas, Presidio, Chinati Mtns State Natural Area. NE-SW trending tributary to San Antonio Canyon, below old San Antonio Mine.
29.89722 -104.47583
Canyon scrub of Acacia greggii, Ugnadia, Chilopsis, Celtis pallida, Opuntia imbricata, and Menodora. Spreading prostrate subshrub ca. 15-20 cm tall. Fls blue, oppen in late afternoon, closed at 1000 hrs.