Prostrate to erect shrub to c. 3 m high, glabrous or stellate- to branched-pubescent; branches not tuberculate. Leaves alternate, scattered, linear, lanceolate or oblanceolate, 0.7–6 cm long, 1–18 mm wide, glabrous or stellate-pubescent, apex acute, margins entire or rarely toothed. Inflorescences 1-flowered; pedicels 3–5 mm long. Flowers zygomorphic; sepals lanceolate, 2.5–9 mm long, apex acute to acuminate, imbricate; corolla 20–30 mm long, glabrous or glandular-pubescent outside, glandular-pubescent inside, red or yellow, unspotted, upper lip 4-lobed; stamens 4, long-exserted, anthers reniform; ovary glabrous, style glabrous. Fruit ovoid to subglobose, 4–9 mm long, 3.5–8.5 mm diam., dry or fleshy, glabrous, often red.
LoM, MuM, Wim, VVP, VRiv, MSB, RobP, MuF, Gold, GGr.
