Annual herbs, to 1 m tall, fine glandular-pubescent overall, glabrescent in age; stems greenish or grayish. Leaves ovate, 8-12 cm long, 4-8 cm wide, membranous, apically acute or acuminate, basally truncate or cuneate, often asymmetric,ical , subentire to sinuate-lobate; petiole 3-8 cm long. Pedicel erect, 6-8 cm long. Flowers with calyx tubular, somewhat restricted basally, 6-9 cm long, the teeth often unequal; corolla white, funnelform, 9-18 cm long, 10-lobed; anthers 8-14 mm long. Capsules deflexed, subglobose, 2-3 cm across, covered with weak prickles, indehiscent, subtended by the persistent calyx base; seeds dark brown, reniform-discoid, 3-4 mm across.

TAITUNG: Kao, s. n. 1991.

Perhaps native of Mexico, widely distributed in tropical areas. In Taiwan, a rarely collected weed.