United States, Texas, Bastrop, Bastrop State Park. NW side of Park, ca. 75 m. N-NE of Pk Rd. 1B, along trail which begins just opposite Cabin 7.
Ridge with gravelly sandy soils. Associates include Pinus taeda, Quercus spp., Ilex vomitoria, Smilax, and Dichanthelium. Twining perennial with urticating hairs. Loose sandy soils with pine duff. Flowers green.