生活型

herb

形態特徵

• Copiously armed annual herbs, pubescent with glandular, multicellular, simple and stellate hairs; prickles yellow or orange-yellow, awl-shaped 1.5 mm long; stems pubescent and prickly.
• Leaves pinnatifid to pinnatisect, oblong or ovate, 4.5–10(–14) cm long, 2.5–5(–8) cm wide, lobes sinuate or angular, pointed, apex acute, stellate-pubescent, sometimes shaggy, often prickly along main veins; petiole 1.5–4 cm long.
• Inflorescences axillary or extra-axillary scorpioid racemes; peduncle branched or not; pedicel 5–10 mm long. Calyx cupular,1 cm long, lobes ovate-lanceolate, 2 mm long, pubescent and prickly; corolla purplish or white, stellate, 16–35 mm long, lobes ovate, 4–8 mm long, sparsely hairy; filaments 1 mm long, glabrous, anthers lanceolate, 9 mm long; ovary puberulent.
• Berry bright red, subglobose, 1–2 cm across; fruiting pedicel 1–1.5 cm, stout; fruiting calyx accrescent, longer than fruit, densely prickly and enveloping most of berry, ultimately widely flaring wide and exposing it; seeds reniform, 2–2.5 mm across.

分布

• 台灣 : a rarely collected weed.
• 世界 : Native of South America, naturalized in North America, Africa, Australia and mainland China.

引證標本

TAIPEI: Pali, Lu & Liao 9018. TAITUNG: Chihpen, Wang et al. 1617.

參考文獻

• William G. D'Arcy and Peng, Ching-I. 1998. Flora of Taiwan, second edition 4: 576. (Fl. Taiwan 2nd edit.)