Shrubs or small trees, 3–4 m tall; young branches stout, ca. 4 mm in diam., densely glandular-setose. Petiole cylindric, 10–20 mm, glandular-setose; leaf blade leathery, narrowly lanceolate, 8–17 × 2–3 cm; base cuneate to obtuse; margin revolute; undulate and roughened; apex acuminate to cuspidate; abaxial surface paler, glabrous, midrib with minute setae and glands; adaxial surface matt, glabrous, midrib sometimes grooved towards base adaxially; lateral veins ca. 16-paired. Inflorescence racemose-umbellate, 5–10-flowered; rachis 5–10 mm, puberulent and glandular. Pedicel 2–3 cm, densely glandular-setose; calyx cupular; lobes 5, ca. 2 mm, glandular-setose; corolla campanulate or tubular, reddish purple, 3.5–4 cm, with 5 deep crimson nectar pouches at base; lobes 5, rounded, ca. 1.5 × 2 cm, emarginate; stamens 10, unequal, 2–3.5 cm, filaments glabrous; ovary cylindric, 7–8 mm, densely setose and glandular-setose; style glandular-setose throughout, stigma small. Capsule oblong, 10–12 × ca. 8 mm, setose. Fl. Mar–Apr, fr. Aug–Nov.
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