海南红豆 hai nan hong dou

Cynometra pinnata Loureiro, Fl. Cochinch. 1: 268. 1790; Fedorovia pinnata (Loureiro) Yakovlev; Ormosia hainanensis Gagnepain.

Trees or shrubs, evergreen, 3-18(-25) m, ca. 0.3 m d.b.h. Bark of stems grayish; xylem mucilaginous. Young branches brownish pubescent, becoming glabrescent. Leaves imparipin­nate, 16-22.5 cm; petiole 2-3.5(-6.5) cm; rachis 2.5-9 cm, pro­longed 0.2-2.6 cm below terminal leaflet; leaflets 7(-9); petio­lule 3-6 mm, grooved, pubescent or nearly glabrous; blades lanceolate to oblanceolate, 12-15 × 4(-5) cm, thinly leathery, both surfaces glabrous, apex obtuse or acute, rarely acuminate; lateral veins 5-7 pairs. Panicles terminal, 20-30 cm. Flowers 1.5-2 cm. Calyx campanulate, longer than pedicel, pubescent; teeth broadly triangular. Corolla pink and yellowish white; standard ca. 13 mm, base shallowly 2-auriculate, claw short and stout; wings spatulate-obovate, claw ca. 4 mm, narrow; keel broadly spatulate-obovate, slightly to not auriculate at base, claw ca. 4 mm, narrow. Ovary densely appressed brown pubes­cent; ovules 4; style glabrous, curved. Legumes 3-7 × ca. 2 cm, body turgid and slightly curved, constricted between seeds; valves thickly woody, orange-red at maturity, brown when dried, with light-colored spots, glabrous; stipe conspicuous, curved obliquely from body of legume. Seeds 1-4, red, ellip­soid, 1.5-2 cm; hilum less than 1 mm. Fl. Jul-Aug, fr. Oct.

● Valleys, mountain slopes, roadside forests, at middle and low elevations. SW Guangdong, S Guangxi, Hainan.