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FOC | Family List | FOC Vol. 10 | Fabaceae | Ormosia

23. Ormosia pachyptera L. Chen, Sargentia. 3: 104. 1943.

菱荚红豆 ling jia hong dou

Fedorovia pachyptera (L. Chen) Yakovlev.

Trees, ca. 8 m, ca. 18 cm d.b.h. Bark of stems gray, smooth, not fissured. Branchlets glabrous, lenticels inconspicu­ous, buds superposed, suborbicular, brown pubescent, leaf scars circular and convex. Leaves imparipinnate, congested at ends of branches, 25-28.5 cm; petiole 5.8-6.4 cm; rachis 15.2-19.7 cm, prolonged 0.7-2.8 cm below terminal leaflet, a convex gland at junction of 2 leaflets; petiole, rachis, and petiolule sparsely appressed white pubescent or glabrescent; leaflets 15-19; petio­lule 4-6 mm; blades oblong-oblanceolate or oblong, often widest above middle, 3.7-8.6 × 1.3-2.4 cm, leathery, pale green and sparsely appressed pubescent abaxially, dark green and gla­brous adaxially, base cuneate, apex acute to acuminate; midvein raised abaxially, impressed adaxially, lateral veins 6 or 7 pairs, veinlets inconspicuous, lateral veins raised abaxially when dried, veinlets slightly raised. Infructescence axillary, 15-18 cm; pe­duncle sparsely pubescent; pedicel 6-7 mm, hairs brownish. Legumes rhombic to obovate, compressed, 4-6.5 × 3.7-5.2 cm (excluding stipe), apex broadly rounded, abruptly acuminate, stipe 5-6 mm; valves black, thinly woody, densely appressed short grayish pubescent, broadly winged along suture, wings 1-1.6 cm wide, internally septate; calyx persistent, abaxially sparsely appressed short pallid pubescent, adaxially densely yellowish brown pubescent. Seeds 1 or 2(-4), red, prolate, slightly compressed, 13-15 × 7-12 × ca. 3 mm; hilum small, ellipsoid and slightly concave, ca. 3 mm.

● Sandy acidic lowland slopes, scattered at forest margins; 400-1000 m. SW Guangxi.


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