生活型

herb

形態特徵

• Perennial herb; stems elongate, tufted, decumbent at base, 40-50 cm long, tinged with purpe, usually glandular pubescent.
• Lower leaves long-petiolate, upper leaves sessile, ovate or broadly so, 2-5 cm long, 1.5-2.5 cm wide, acuminate or acute at apex, cordate or nearly so at base, chartaceous, margins entire and wavy, 1-nerved, glabrous on both surfaces or slightly hairy along veins beneath; petiole 1-2 cm long, pubescent.
• Flowers solitary, white, axillary, 5-8 mm in diam.; pedicels 1.5-2 cm long, slender, glandular hairy; sepals lanceolate, 4-6 mm long, glandular hairy outside, acute; petals deeply 2-lobed to base, lobes lanceolate, 5-7 mm long, obtuse; stamens 7-10, anthers orange-red; styles 5, reflexed upward.
• Capsules broadly ovoid, as long as the sepals, 5-valved, each valve bifid; seeds ellipsoid, 0.7-0.8 mm long, mamillate, rusty-brown.

分布

• 台灣 : common weed throughout the island, roadsides and fields.
• 世界 : Widely distributed in temperate subtropical regions of S. China, Japan, the Ryukyus and the northern hemisphere.

引證標本

TAIPEI: Chihsinshan, Ying 784; Tanshui, Ying 791. HSINCHU: Nanchuang, Kao 7859. NANTOU: Chitou, Ying 803, Yamamoto & Mori s. n. 1938; Chingshuikou, Kou 711. TAITUNG: Yamamoto s. n. 1933.

引用文獻

• YING, SHAO-SHUN, Flora of Taiwan, second edition 2: 373. 1996.  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)