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Ormosia glaberrima

Description from Flora of China

Fedorovia glaberrima (Y. C. Wu) Yakovlev; Ormosia kwangsiensis L. Chen.

Trees evergreen, 15(-21) m, to 40 cm d.b.h., or shrubs. Bark of stems grayish green, smooth. Branchlets green, dark green when dried, rusty brown pubescent, becoming glabres­cent; buds brown pubescent. Leaves imparipinnate, 12.5-19.7 cm; petiole 2.5-3.7 cm; rachis 3.5-7.2(-10.8) cm, prolonged 0.7-0.8 cm below terminal leaflet, not grooved, yellowish brown pubescent when young, becoming glabrescent; leaflets (3-)5-7, ovate or elliptic-lanceolate, (2.7-)4-9.5 × 1.4-3.6 cm, leathery or thinly so, both surfaces glabrous, base broadly cu­neate to rounded, apex acute to acuminate, slightly retuse, lat­eral veins 9 or 10 pairs, angled 45° with midvein; petiolule 3-6 mm, grooved. Panicles terminal or axillary, 9-12 cm; peduncle and pedicel densely appressed rusty pubescent, becoming gla­brescent. Flowers ca. 1 cm; pedicel short. Calyx campanulate; teeth broadly flared out and appearing flat-faced, appressed yel­lowish pubescent abaxially, fulvous pubescent adaxially. Stan­dard suborbicular, ca. 8 × 8 mm, apex retuse, claw 2-3 mm; wings oblong, 8-9 × 3.5-4 mm, 2-auriculate, claw 2-3 mm; keel oblong, 8-9 × 3.5-4 mm, curved, 2-auriculate, claw 2-3 mm. Stamens unequal, 3-5 longer, others shorter, incurved. Ovary glabrous; ovules 5. Legumes compressed, elliptic or oblong, 3.5-5 × 1.7-2 cm, base cuneate, apex acute, beak short, slightly curved, stipe ca. 1 mm; valves black, woody, glabrous, internally septate. Seeds 1-4, red-brown, oblate or oblong, 1-1.1 × 0.8-0.9 cm, glossy; hilum elliptic, concave, 1-3 mm. Fl. Jun, fr. Oct.

Ormosia glaberrima is similar to O. emarginata due to the color and shape of the legumes and to the flat-faced calyx. The former has ovate or elliptic-lanceolate leaflets that are thinly leathery, with tapering, slightly retuse apices; its calyx is hairy on both surfaces; the standard apex is emarginate; and the peduncle is often covered with appressed yellow-brown silky hairs. The latter has obovate, obovate-elliptic, or oblong leaflets that are thickly leathery, with broadly rounded, emargi­nate apices; its calyx is glabrous on the outside, hairy only on the mar­gin and inside; the apex of the standard is rounded; and the peduncle is glabrous.

● Mountain slopes, open valley forests; 200-800 m. W Guang­dong, SE Guangxi, Hainan, Hunan (Jianghua), Jiangxi.


 

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