Shrub large or small, stellately grey-puberulous or glabrous; leaves opposite, imparipinnate, rarely simple, leaflets 5-13, lanceolate, glabrous above, puberulous beneath, incised or serrate; flowers often drooping in large, terminal, few-flowered, glabrous, corymbose racemes often shorter than the leaves; bracts lanceolate acute; calyx tubular or campanulate, lobes-5, deltoid, acuminate; corolla bright yellow, lobes-5, sub-equal, tube abruptly contracted at the base; stamens-4, included, hairy at the insertion point, anthers 2-celled, distinct pendulous, staminode small; disc cupilar, fleshy, 5 lobed; ovary oblong or narrowly cylindric, slightly compressed, ovule 2-4 seriate in each locule; capsules linear, cylindric, compressed, brown, tips acute; seeds flat, many, thin, winged.