Shrubs, 0.6–2 m. Stems erect to ascending, not rooting at nodes; branchlets dark brown, rigid, ± tomentulose. Leaves not fascicled; petiole 1–2 mm; blade flat, usually elliptic or oval, sometimes suborbiculate, 7–21 × 4–13 mm, base rounded to ± cuneate, margins not revolute, denticulate most of length, teeth 9–17, apex obtuse, rounded to truncate, abaxial surface pale green to grayish green, strigose on veins, glabrate, adaxial surface dark green, glabrous. Inflorescences axillary, 1–2.5 cm. Flowers: sepals, petals, and nectary deep blue to purple. Capsules 3–4 mm wide, not lobed; valves smooth, horns apical, minute, not rugose, intermediate ridges absent. 2n = 24.