Shrub to c. 3 m high, multistemmed, glabrous, viscid; branches sometimes obscurely tuberculate. Leaves alternate, c. terete or linear, mostly 1–3 cm long, 0.5–3 mm wide, acute, margins entire. Inflorescences 1(–2)-flowered; pedicels 5.5–18 mm long, straight or curved. Flowers zygomorphic; sepals ovate to oblanceolate, 5.5–11 mm long, subequal, usually obtuse, valvate, cream to purplish; corolla usually 12–15 mm long, pubescent outside, partially villous inside, usually pale lilac, spotted, upper lip 2-lobed; stamens 4, included, anthers reniform; ovary villous, style pilose or villous at least in proximal half. Fruit ovoid, 3.5–5 mm long, 2.5–3.5 mm diam., dry, villous. Flowers mostly spring and summer.