生活型

herb

形態特徵

• Annual herbs, to 1 m tall, finely glandular-pubescent overall, glabrescent in age; stems greenish or grayish.
• Leaves ovate, 8–12 cm long, 4–8 cm wide, membranaceous, apex acute or acuminate, base truncate or cuneate, often asymmetric, subentire to sinuate-lobate; petiole 3–8 cm long.
• Pedicel erect, 6–8 cm long. Calyx tubular, somewhat restricted basally, 6–9 cm long, 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 persistent calyx base; seeds dark brown, reniform-discoid, 3–4 mm across.

分布

• 台灣 : a rarely collected weed.
• 世界 : Perhaps native of Mexico, widely distributed in tropical areas.

引證標本

TAITUNG: Kao, s. n. 1991.

引用文獻

• William G. D'Arcy and Peng, Ching-I, Flora of Taiwan, second edition 4: 551. 1998.  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)