Shrubs, leafless except young branches. Flowers in cyme-like clusters at nodes, bisexual, slightly zygomorphic, each subtended by a pair of opposite bracts. Calyx cupular, 5–lobed. Corolla narrowly tubular with spreading limb, pale yellow; limb with 5 short, broad lobes, induplicate in bud. Stamens usually 4, didynamous, inserted at base of corolla-tube; a staminode present or rarely fertile; anthers unilocular, not cohering, dehiscing by a semicircular slit. Ovary bilocular; stigma capitate, very shortly bilobed. Fruit a smooth capsule, opening by 2 bifid valves, the lower half enclosed by calyx. Seeds subreniform.
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