Shrubs, 2–10 m tall; older branches smooth, glabrous; young shoots stout, floccose. Petiole 10–15 mm, floccose when young, glabrescent; leaf blade leathery, broadly lanceolate or oblong-elliptic, 8–12 × 3–4.5 cm; base rounded or broadly cuneate; apex cuspidate or acute; both surfaces glabrous except for brownish pubescent midrib abaxially; midrib prominent abaxially, grooved adaxially; lateral veins 15–22-paired, slightly raised. Inflorescence dense, 15–20-flowered; rachis 10–25 (–30) mm, glabrous. Pedicel ca. 0.5 cm, slender, glabrous; calyx lobes 5, 1–2 mm, glabrous; corolla tubular-campanulate, scarlet to deep crimson, 3.5–4 cm, with 5 prominent nectar pouches at base; lobes 5, suborbicular, ca. 1 cm, emarginate; stamens 10, unequal, 2–3.5 cm, filaments glabrous; ovary cylindric, ca. 8 × 2 mm, glabrous; style 2.5–3 cm, glabrous, stigma capitate, small. Capsule cylindric, 15–20 × ca. 5 mm, glabrous. Fl. Mar–May, fr. Aug–Oct.
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