United States, Texas, Presidio, Chinati Mtns. State Natural Area. Pelillos Canyon between dam and Tinaja Prieta fork.
29.86417 -104.46361
Igneous-derived gravel of canyon bottom. Riparian woodland with Salix, Juglans microcarpa, Fraxinus, and Baccharis. Erect rosettiform annual. Common in fine-grained soils.