Annual to 7 dm, widely branched from the base, the upper parts and petioles viscid-villosulous, the hairs ca 0.5 mm; lvs ovate, 3–6 cm, shallowly and unevenly repand-dentate, broadly acute to rounded at base, often inequilateral; pedicels at anthesis 3–5 mm, to 1 cm at maturity; fls 7–10 mm, yellow; cal-lobes deltoid, about as wide as long; anthers 0.7–1.2 mm; fruiting cal obscurely angled, 2–3 cm. Dry upland woods and barrens; Mo. to se. Neb., Kans., Okla., and Ark. May–Sept. (P. pubescens var. m.)