United States, Texas, Val Verde, Amistad National Recreation Area: Highway 277 South, lower picnic area, head of south fork of San Pedro Creek. Sample plot no. 44. Del Rio NW Quad (1:24,000).
29.49273 -100.90759
Rocky (limestone) soil on north-facing slope at upper edge of former inundation zone; Roosevelt weed-retama woodland with yellow star-thistle and white mulberry. With Centaurea melitensis, Baccharis neglecta, Parkinsonia aculeata, and Morus alba. Very locally common annual to 35 cm. Corolla white.
flowers
Sheet
Flora of Amistad National Recreation Area. NPS accession No.: AMIS-00291. NPS Catalog No.: AMIS 41440. [NOTE: This specimen property of National Park Service, on "permanent" loan to TEX.].