Shrubs, rarely small trees, 2–5(–10) m tall; bark grayish; young shoots densely glandular-setose. Petiole stout, 10–20 mm, glandular-setose mixed with branched hairs; leaf blade leathery, oblong-lanceolate to oblanceolate, 8–16 × 2.2–4 cm; base cuneate or subcordate; margin revolute, ciliate; apex acuminate or cuspidate; abaxial surface with setae that are glandular or branched at the tip and persistent, especially near base, sometimes restricted to midrib, midrib with stouter setae, rufous-setose near base; adaxial surface green, glabrous when mature; midrib prominent abaxially, deeply grooved adaxially; lateral veins 15–18-paired. Inflorescence 8–12-flowered; rachis ca. 15 mm, glandular. Pedicel 0.6–1.5 cm, glandular-setose; calyx ca. 2 mm, ciliate; corolla tubular-campanulate, fleshy, deep red, red, or white, with black-crimson basal blotch, 4–4.5 cm, with 5 black crimson nectar pouches at base; lobes 5, suborbicular, 1.3–1.5 × 1.8–2 cm, emarginate; stamens 10, unequal, 2–3.4 cm, filaments glabrous; ovary ovoid, ca. 5 mm, densely glandular-setose; style ca. 3.5 cm, glabrous. Capsule cylindric, 10–20 × 6–7 mm, densely setose. Fl. Apr–Jun, fr. Sep–Oct.
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