United States, Texas, McMullen, On N part of U. S. Navy's Escondido Ranch, ca. 2.1 airmiles N of ranch HQ, ca. 6.5-6.6 airmiles NE of SW corner of county. Mirasol Creek Quadrangle.
28.11681 -98.74139
Locally common in low herbaceous vegetation common in occasionally disked field on level broad floodplain of Nueces River. Associates include Lesquerella lindheimeri, Quincula lobata, Oenothera speciosa, Geranium texanum, Lepidium sp., Ammoselinum butleri, Glandularia bipinnatifida, Euphorbia spathulata, Sonchus sp.