Slender branched shrubs or herbs, the branching alternate. Leaves alternate, rotund or linear, mostly toothed in the apical 1/2, cuneate below, inconspicuously glandular punctate, the midvein prominent with about 3 ascending lateral veins on each side; petioles not distinct. Inflorescences 1-several flowers in the axils of a leaf; pedicels slender. Flowers with the calyx lobes 5, equal, narrow, separate to near the base, the corolla white, rotate or tubular campanulate, glabrous out-side, sometimes bearded at the throat within, the stamens 4 or 5, subequal or not, the filaments glabrous, inserted low or high on the corolla tube, alternate with the corolla lobes, the anthers introrse, versatile, basifixed, the basal portions of the thecae divaricate; ovary ovate conical, the style slender, apically com-pressed, the stigma a pair of lateral areas on the style apex. Capsule elliptical, ovoid or conical, glandular punctate, dehiscent septicidally and loculicidally, the placenta remaining as a conspicuous, reticulate-pitted peg; seeds numerous, minute, yellow, with a thick crystalline reticulum.
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