Shrubs, 2–4.5 m tall; young shoots densely pubescent. Petiole 15–22 mm, glabrous or puberulent; leaf blade subleathery, lanceolate, oblong-lanceolate or obovate-lanceolate, 4–9(–12) × 1.8–4 cm; base narrowly cuneate; margin slightly revolute; apex acuminate, cartilaginous-mucronate; lateral veins reaching margin. Inflorescence subapical, 1-flowered. Pedicel 0.4–0.8 cm, glandular-hairy; calyx deeply lobed; lobes dark red, oblong-rounded, 5–6 mm, densely glandular-setose at base abaxially, margin with dense sessile glands; corolla broadly tubular or tubular-funnelform, dark red, ca. 2.5 cm; tube broadly cylindric, ca. 15 mm, ca. 4 mm wide at base, outer surface glabrous, inner surface puberulent; lobes oblong, ca. 1 cm, glabrous, apex slightly emarginate; stamens 5, as long as or slightly shorter than corolla; filaments glabrous. Capsule ovoid, ca. 6 × 5 mm, densely glandular-setose. Fl. Feb–Apr, fr. Aug–Nov.
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