Subshrubs. Roots tuberous. Stems branching, suffrutescent, glabrous except at nodes; young branches slender, nodes dilated, tufted-pubescent. Leaves opposite, sometimes in axillary fascicles, sessile; blade subterete, fleshy, margins entire. Inflorescences lateral, cymose, few-flowered, axes angled; peduncle short. Flowers sessile; sepals persistent, distinct; petals fugacious, 5, distinct; stamens 20-25, distinct, anther 2-locular, oblong; gynoecium 3-carpellate, ovary superior, placentation free-central, style 1, stigmas 3, dilated. Fruits capsular, longitudinally dehiscent from apex; valves persistent; exocarp and endocarp evidently differentiated and separating; exocarp 3-valved, valves recurving; endocarp 6-valved, valves erect. Seeds many, uncinate to arcuate, small, estrophiolate; seed coat granulate, pellicle absent.
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