United States, Texas, Presidio, Chinati Mtns State Natural Area. Cinco de Mayo Canyon, W of and parallel to San Antonia Cyn. Perennial stream in igneous bedrock.
29.9125 -104.49
With Baccharis, Rhus virens, Opuntia lindh., Anisacanthus, Opuntia imbricata, Dasylirion, grasses, and occas. Tamarix. Erect annual. Fls white.