Shrubs, evergreen, 0.5–1.5 m. Stems ascending to spreading, not rooting at nodes; branchlets yellowish or grayish green, glaucescent, thorn-tipped, round in cross section, rigid, puberulent, glabrescent. Leaves: petiole 2–8 mm; blade flat to cupped, ovate to elliptic, 10–30 × 6–18 mm, base rounded, margins usually entire, sometimes minutely glandular-denticulate distally, glands 18–30, apex obtuse, abaxial surface pale grayish green, sparsely puberulent or glabrous, sometimes villosulous along veins, adaxial surface pale green to grayish green, glaucous, dull, glabrate; 3-veined from base. Inflorescences axillary, umbel-like or racemelike, sometimes densely clustered, 1.2–2(–4) cm. Flowers: sepals, petals, and nectary usually white, rarely pink. Capsules 3.5–5 mm wide, lobed; valves rugose, viscid when young, weakly crested. 2n = 24.
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