生活型

shrub

形態特徵

• A scandent shrub, covered with dense, tomentose prickles.
• Leaves compound bipinnate, with pinnae 7–8 pairs, each pinna with leaflets 8–11 pairs; leaflets opposite or subopposite, rectangular-oblong, acuminate, apiculate at apex, truncate or rarely rounded at base, 2.5–5 cm long, 1–1.7 cm broad; stipules subulate, divided.
• Flowers in terminal racemes; bracts ovate, acuminate, about 20 mm long; calyx 5-lobed, tube about 5 mm long, lobes tomentose, oblong to elliptic, 15–16 mm long, rounded at apex; petals 5, the upper one red, orbicular, 18 mm long, with claw about equal length to the blade, ciliate at margin, the other 4 petals yellowish white, obovate-triangulr, spreading hairy at inner surface, ciliate at margins, with short claw at base, 19–21 mm long, 12–13 mm broad; stamens 10, free; filaments dilated at base, densely hairy; anthers dorsal fixed, split longitudinally; pistil estipitate; ovary oblong, densely hairy; style short, hairy at base; stigma terminal, tubular, hairy.
• Pods green when young, becoming brown when mature, rectangular oblong, densely pricled, 9–10 cm long, 4–4.5 cm broad, beaked at apex, about 6 seeds; seeds cylilndric, smooth, 15 mm long in diameter.

分布

• 台灣 : Taiwan, in central and southern parts.
• 世界 : Southern China, Thailand;

引證標本

NANTOU: Mingjien-Ershui, Huang 4493.

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: 179. .  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)