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Arbor mediocris, rarius usque ad 30 m alta, rarissime arbuscula; truncus usque ad 1 m crassus; cortex laevis usque squamosus, cinereus vel albus vel fulvus. Folia aut dimorpha, iuniora 3(-5)-lobata, lobis usque medium laminae incisis, vetustiora ovata-lanceata (rarissime reniformia), aut omnia ovato-lanceata, chartacea, rarius (sub)coriacea, nervatura pedata, nervis superioribus lateralibus 2-3 paribus praedita, aut (sub)glabra aut supra laxe, subtus densius sordide-fusco vel cinereo-albo-pubescentia usque tomentosa; 4-25 cm longa, 4-22 cm lata; petioli sulcati, ± canaliculati, 4-18 cm longi. Flores in fasciculis terminalibus aggregati, viridi-fulvi; stamina 4; filamenta ± pilosa, rarius glabra, in floribus hermaphroditi usque ad 3, in [male male] usque ad 4 mm longa, interdum glandulis dorsalibus praedita, staminodiis 4, 1/2-1 mm longis minute pilosis alternantia; stylus recurvus usque sigmoideus. Drupa pubescens vel glabra; exocarpium in dimidia parte inferiore valde rugosum, in dimidio superiore vel totaliter costis ca. 8 longitudinalibus praeditum; alae sordide-fuscae vel nigrescentes, basi 2-3(-4) mm, sursum (10-)16(-22) mm latae, 4-10 cm longae, basi minute pubescentes, ceterum vel totaliter glabrae; testa spongiosa.
Tree 3-30 m high, dbh 20-100 cm, trunk smooth or with coarse scales, pale grey or nearly white. Leaves: petiole 4-19.5 cm long; leaf-blade coriaceous or chartaceous, entire, or in young trees with 3 or 5 acute lobes, cordate to ovate, 7-24 by 4-21 cm, base cordate to broadly rounded to cuneate, apex c. 1 cm acuminate, pubescent on both surfaces or the upper surface glabrous, nerves conspicuous, 3-or 5-palminerved, with ladder-like tertiary veining. Inflorescence (including 3-6 cm long peduncle) 5-17 cm long, the flowers compact, all parts more or less pubescent. Flowers 4-merous, small (mature bud less than 1.5 mm diam.), bisexual and unisexual (only male flowers), pale green or creamy; filaments in female flowers c. 1.5 mm long, in male flowers c. 2 mm long with 4 alternating small glands, 0.5-1 mm long. Fruits: nut ovoid, 1.4-2 by 0.8-1.3 cm, longitudinally 8-ribbed, topped with a pair of spathulate wings, 6.5-9 cm long, 2-3 mm wide at base, 0.8-1.1 cm wide at widest part, resembling those of certain dipterocarps, yellowish green; the whole fruit thinly up to thickly pubescent, seldom glabrous.
Medium-sized dry season deciduous trees. Leaves dimorphic. Juvenile leaves with lamina strongly 3-or 5-lobed. Adult leaves with petiole 2–12 cm long; lamina ovate to broadly ovate or kidney-shaped, often shallowly 3-lobed, sometimes 2-or 5-lobed, acuminate, 5–20 cm long, chartaceous to subcoriaceous, variously hairy with simple hairs to glabrescent. Panicles in upper axils to 30 cm long, becoming pendulous; peduncles 2–12 cm long. Perianth pubescent; lobes c. 1 mm long. Stamens usually 4; filaments usually pilose. Staminodes clavate. Fruit body 8–20 mm long, pilose to glabrescent; wings 2.5–12 cm long, pilose to glabrescent.
Tree, up to 10 m high. Leaves usually 3-lobed at apex. Fruit a bony nut produced into 2 large wings. Flowers white.
Flowers greenish-yellow or cream.
Tree, 25–50 ft. high
