Plants branched, 1 m. Stems slender, minutely and obscurely stellate-hairy. Leaves: stipules minute; petiole 1–1.5(–2) cm, to 1/3 times blade length, minutely and obscurely stellate-hairy; blade discolorous, ovate, 2.5–3.5 cm, base ± cordate, margins ± straight, apex acute to subobtuse. Inflorescences open racemes or panicles, ebracteate. Pedicels 2–3 cm. Flowers: calyx ca. 1/2-divided, 3–5 mm; petals yellow, fading to orange, 5 mm. Schizocarps minutely and obscurely hairy; mericarps 5, 7–9 mm. Seeds 2.5 mm, minutely hairy.

Flowering summer. Roadsides, disturbed sites; of conservation concern; 100 m; Tex.

Wissadula parvifolia is found only in Hidalgo County.