Shrubs, sometimes arborescent, evergreen, 0.5–4 m. Stems erect, ascending to arcuate, rarely prostrate, not rooting at nodes; branchlets green, not thorn-tipped, angled in cross section, flexible, sparsely puberulent or glabrous. Leaves: petiole 5–10 mm; blade flat to cupped, ovate to suborbiculate, 10–45 × 10–30 mm, base obtuse to rounded, margins denticulate, ± revolute, teeth 21–45, apex obtuse to rounded, abaxial surface pale green, puberulent to densely villosulous, veins prominently raised, puberulent to villosulous, adaxial surface dark green, glabrate; 3-veined from base. Inflorescences axillary, paniclelike, 2–7 cm. Flowers: sepals, petals, and nectary blue. Capsules 3–4 mm wide, weakly lobed at apex; valves smooth, viscid, not crested.
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