Trees or shrubs, to 40 m, unarmed. Leaves alternate, imparipinnate; leaflets alternate to subopposite, (3-)5-21, lanceolate to ovate, apically retuse or emar-ginate, basally obtuse to truncate, subcoriaceous or membranaceous; stipules small, caducous or inconspicuous; stipels minute or absent. Inflorescence of ra-cemes or panicles, terminal, rarely completely axillary; bracts and bracteoles narrow, small, often caducous. Flowers small, sessile or pedicellate, calyx tur-binate-campanulate, lobes usually 5, unequal, valvate or rarely narrowly imbri-cate, corolla yellowish white, petals 5, all similar, free, erect patent; stamens 10(5), free, subequal, exserted; filaments inflexed; anthers uniform, ellipsoid, dor-sifixed; ovary sessile or short stipitate, 1-4-ovuled; style filiform; stigma small or truncate, terminal. Fruit oblong to broadly linear, plano-compressed or rarely turgid, indehiscent, coriaceous or woody, narrowly winged, reticulate; seeds ovate or orbicular, compressed, brown to reddish brown, the hilum apical, ellip-tic. Chromosomes: n = 9.
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