United States, Texas, Presidio, Chinati Mtns. State Natural Area. Lower Pelillos Arroyo, a large NE-SW trending, gravelly arroyo with several channels.
29.85167 -104.5125
Sandy arroyo scrub with Chilopsis linearis, Acacia sp., Celtis pallida, and Guaiacum. Common perennial herb to 20 cm tall in fine grained soil at margins and just above arroyo.