生活型

herb

形態特徵

• An annual woody herb, 1–1.5 m tall; young branchlets and petioles tomentose, glabrous at maturity.
• Leaves alternate, evenly pinnate, 12–15 cm long; petioles 5 mm long; leaflets opposite, 40–80, glabrous, linear-oblong, 1.2–2 cm long, 0.2-0.3 cm wide, pale green, mucronate at the apex, oblique at the base, entire, midrib impressed beneath, pulvinate.
• Flowers 1–3, axillary raceme; pedicels 5–6 mm long; calyx campanulate, pale green; corolla yellow, all clawed; standard-broadly cordate, 1.3 cm long, 1–1.5 cm wide; wing-petals 1.1 cm long, 5 mm wide; keel-petals 5 mm long, 5 mm wide; stamens 10, diadelphous, yellow; ovary linear, parietal placentation; style filiform, incurved, stigma capitate.
• Pods erect, falcate, 18–25 cm long, dehiscent.

分布

• 台灣 : Often cultivated and escaped to naturalize in the open wasteland, especially disturbed area, at elevation below 300 m high, throughout the whole island.
• 世界 : India, Malaysia, Java and the Philippines.

引證標本

TAIPEI: Yenliao, Huang 3810. NANTOU: Wufeng, Huang 1191. CHANGHUA: Tienchung, Huang 276. YUNLIN: Hoan, Huang 10292. KAOHSIUNG: Chishan, Huang 2397. PENGHU: Huang & Kao 6893. PINGTUNG: Lilungshan, Huang & Tsou 10118; Oluanpi, Ohashi et al. 14658.

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: 362. .  (Fl. Taiwan 2nd edit.)