Branchlets up to 7 mm in diam., greyish brown, glabroiis. Axillary buds often 2 per axil, the upper of which is more developed. Leaves 2-4-jugate; petiole mostly c. 1.5 mm in diam.; rachis often flattened as well beneath as above; petiolules 3-8 mm long. Leaflets (narrowly) elliptic, 5.5-10(-15) by 1.5-3.*'(-5) cm, index 2.5-5, chartaceous to co-riaceous; base if oblique broadest at acroscopic side; margin tending towards being 'shouldered' towards the apex; midrib nearly always slender and angular beneath, nerves up to 1.8 cm apart, angle to midrib 50-70°, reticulations above always clear, beneath nearly always less conspicuous to sometimes invisible. Inflorescences 12-20 cm long with few long erecto-patent, spicoid, thick; branches usual]y unbranched; flowers in sessile clusters; pedicels up to 1 mm long. Calyx 4-(rarely 5-)mer-ous, 0.3-1 by 2-2.5 mm. Disc sparsely hairy. Stamens 7-11; filaments 2 mm long, sparsely hairy in lower half only. Ovary 1 by 2 mm, according to some authors exceptionally 3-celled; style 0.8 mm. Fruits as in subsp. chinensis.