Flowering as a shrub, becoming a tree up to 12 m. tall; trunk up to 6 dm. diam.; branchlets, petioles, young lvs and panicle-branches covered with short brownish hairs. Lvs imparipinnate; lflts sharply serrate, subsessile. Lvs of juveniles submembr., up to 25 cm. long, 6-10-jugate; terminal lflt 3-6 cm. long, including petiolule, 1·5-3 cm. wide, ovate-elliptic; lateral lflts elliptic-oblong, diminishing downwards from 4-3 cm. to 1 cm. long. Lvs of adults subcoriac., 3-5-jugate; terminal lflt obovate-cuneate, acute, 4-7 cm. wide; lateral diminishing downwards from 4 cm. to 1 cm. long, elliptic-oblong; stipules foliaceous. Panicles much-branched, up to 15 cm. long; fls ∞, c. 3 mm. across. Sepals ovate, c. 1 mm. long; petals narrow, c. 1·5 mm. long, stamens exserted, styles c. 1 mm. long. Capsules ovoid, pilose, c. 3-4 mm. long, bearing persistent sepals and styles.

2n = 32

2n = 32

n = 16