生活型

herb

形態特徵

• Annual herbs, to 1.5 m tall, glabrescent, hairs eglandular; stems often dark violet.
• Leaves ovate or broadly ovate, 5–20 cm long, 4-l5 cm wide, membranaceous, apically acute or acuminate, basally truncate or cuneate, often asymmetrical, irregularly sinuate-dentate, lobed, occasionally entire, glabrate; petiole 2–6 cm long. Pedicel erect or pendulous, ca. 1 cm long.
• Calyx tubular, 4–9 cm long; corolla white, yellowish, or pale purple, funnelform, sometimes doubled or tripled, 8–20 cm long, limb 5–10 cm across, lobes mostly 5, elongate; anthers 9–12 mm long.
• Capsules deflexed, subglobose, 3 cm across, tuberculate, subtended by remnants of persistent calyx base; seeds pale brown, reniform-discoid, 3–5 mm across.

分布

• 台灣 : a seldom collected weed.
• 世界 : Probably native of the Americas but long introduced and naturalized in Asia.

引證標本

TAIPEI: Tanshui, Sasaki s. n. 1921. KEELUNG: Sasaki s. n. 1921. TAINAN: Tainan, Sasaki 275 .Bankinsing, Henry 57. KAOHSIUNG: Tungsha, Liao 394. PENGHU: Hsiwei, Chen 713. TAITUNG: Lanyu Is., Chang 9074.

參考文獻

• William G. D'Arcy and Peng, Ching-I, Flora of Taiwan, second edition 4: 552. 1998.  (Fl. Taiwan 2nd edit.)