An evergreen, large shrub or small tree, 3-5 m high; leaves compound, leaflet 5-9, oblong, acuminate at apex, margins sub-serrate to serrate, glabrous, prominently nerved beneath, with 2 sub-orbicular, stipule-like leaflets at the base of the petiole; flowers bright yellow in showy, terminal, many flowered racemes or panicles; calyx leathery, densely hirsute, woolly; corolla bright yellow with orange streaks near the base, tube very narrow at base, constricted, suddenly expanding, limbs-5, spreading, about 5 cm across, margins crisped, throat with orange streaks; stamens-4, included, anther cells-2, large, elliptic, distinct, attached near the tips; ovary 2-celled; ovules many, style long, filiform, stigma 2-lobed; capsule brown, 30-60 cm long, linear, compressed, twisted at maturity; seeds many, compressed or discoid, prominently winged.