Climbing shrubs or small trees, with hairy young shoots and opposite, usually entire leaves. Cymes terminal, panicled. Flowers large, yellow or brownish-yellow, zygomorphic; bracts rarely foliaceous. Calyx campanulate, subentire to 4-5-toothed, persistent, not enlarged in fruit. Corolla 2-lipped, infundibuliform, tube narrowed at base, ventricose towards the apex; limb oblique, (4-) 5-lobed. Stamens 4, inserted near the throat, subexserted to included; anthers oblong. Ovary 4-locular, with 1 ovule in each locule; style with 2-fid stigma. Drupe fleshy, 2-4-loculed with bony endocarp; seeds oblong, exalbuminous.