Salt肤木, deciduous small tree or shrub, 2-10m tall. Small branches are brownish, covered with rust-colored soft fur, with round small lenticels. Odd-pinnate compound leavesMutus, the rachis and petiole often have wings; leaflets 5-13, leaflets sessile; leaflets papery, polymorphic, usually ovate or ellipsoid ovate or oblong, 6-12 cm long, 3-7 cm wide. Apex acute, base rounded, margin with coarse teeth or nearly glabrous, panicle leaves abaxially covered with rusty soft fur.Large, axillary, much-branched;雄inflorescence 30-40cm long,雌inflorescence shorter, densely covered with rusty pubescence; flowers small, bisexual, yellowish-white;雄sepals ovate, about 1mm long, petals obovate-ovoid, about 2mm long, curled outward when in flower, stamens protruding, filaments linear, anthers ovate;雌sepals shorter, about 0.6mm long, petals elliptic-ovoid, about 1.6mm long; disk glabrous; ovary ovate, about 1mm long, densely covered with white fine pubescence; style 3-lobed, stigma capitate. Drupes globose, slightly flattened, about 4-5mm in diameter, covered with jointed pubescence and glandular hairs, red when mature, stone about 3-4mm in diameter. Flowering period Aug.-Sep., fruiting period Oct.