Decumbent to erect perennial 10–30(–50) cm high, sessile glands obscure, otherwise glabrous or with sparse, rarely dense, coarse eglandular hairs on stems and leaves; branches often rooting at base. Leaves usually ovate to almost elliptic, usually 1.5–4.5 cm long, 6–27 mm wide (rarely to only 1 cm long and 4 mm wide), base stem-clasping, margins toothed. Flowers single in bract axils; pedicels 1–12 mm long; bracteoles 3–6 mm long. Sepals 3–6 mm long, lengthening to 8–10 mm in fruit; corolla 6–12 mm long, pink with red-purple striations, pubescent on the upper side of tube inside; staminodes 2. Capsule broad-ovoid, 4.5–7 mm long; style 1.8–3.5 mm long. Flowers spring and summer.