生活型

herb

形態特徵

• An annual suffruticose herb, much branched, up to 150 cm high; stems angular-ribbed, hairy, gland-dotted.
• Leaves simple, alternate, petiolate; petioles 15–20 mm long, gloved, hairy, gland-dotted, articulate at uppper parts; blades broadly ovate, cordate-rounded, 6.5–8 cm long, 4.5–5.5 cm wide, lateral veinlets prominent, appressed pubescent and with dark-coloured, glandular dots on both surfaces, denticulate, subacute or obtuse at apex, obtuse or sometimes cuneate at base.
• Racemes of dense flowers, axillary, long pedunculate; flowers small, light violet, 3–5 mm long; bracts small, ovate; pedicels 1–2 mm long; calyx copiously gland-dotted; tubes 1.5–1.8 mm long; lowermost segments vaulted; the other segments much shoter; corolla light violet with a pale base; standard 5.5–6.5 mm long, glabrous; keels slightly shoter than wings.
• Pods enclosed by the calyx, ribbed, black, glabrous, about 6 mm long.

分布

• 台灣 : Naturalized in waste ground of Taipei County, rare.
• 世界 : Distribution: India, Malay peninsula, Indonesia and China.

引證標本

TAIPEI: Hsingchuan, Lin s. n. 1990, Ou, Lin & Kao s. n.1990*.

參考文獻

• Huang, S. F. & T. C. Huang, Taiwania 32(1): 11-118. 1987.
• Huang, S. F. & T. C. Huang, Flora of Taiwan, second edition 3: 354. .  (Fl. Taiwan 2nd edit.)