Shrubs, densely tomentose with non-glandular and inconspicuous glandular hairs. Leaves alternate, simple, almost sessile or petiolate. Inflorescence cyme-like, terminal on short, lateral, leafy branches. Flowers bisexual, actinomorphic, subtended by pairs of opposite or sub-opposite bracts. Calyx cupular, 5–lobed. Corolla narrowly tubular with spreading limb, drab white with violet striations; limb with 5 (rarely 4 or 6) long and narrow lobes, volutive in bud. Stamens 5, unequal, inserted at base of corolla-tube; filaments pubescent at base; anthers unilocular, not cohering, dehiscing by a semicircular slit. Ovary bilocular. Stigma capitate, very shortly bilobed. Fruit a smooth capsule, opening from apex by 4 valves, more or less enclosed by calyx. Seeds subreniform.
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