Tall trees. Stipulesl Leaves alternate, imparipinnate, often 5-foliolate. Inflorescences axillary, paniculate; bracts and bracteoles very small, caducous; bracteoles 2, enclosing young flower bud. Flowers bisexual, slightly zygomorphic, pedicelled. Petals 5, erect-patent, clawed, with the 2 lateral (outermost) ones larger. Stamens 7-9 (4 or 5 fertile, 2-4 staminodes), unequal, free; anthers basifixed, bent inward horizontally, apex slightly projecting, dehiscing by terminal pores or short slits. Ovary sessile, flattened, 3-5-ovuled; style slightly incurved; stigma terminal, obscure. Seeds flat, disk-like; cotyledons flat.
The stamens of this genus number 7-9 (4 or 5 of them fertile and 2-4 stami- nodial). Hutchinson (l.c.) erroneously described "stamens 10, free, 2 fertile, remainder abortive or reduced to staminodes."