Description from Flora of China
Shrubs or small trees, 1.5–5(–8) m tall; young shoots green, glabrous. Petiole pale pink, 15–20 mm, glabrous; leaf blade thickly leathery, oblong-oblanceolate to oblanceolate, 10–16 × 2–4.5 cm; base cuneate; margin revolute; apex acute to acuminate; both surfaces glabrous; abaxial surface pale green; adaxial surface darker; midrib prominent abaxially, grooved adaxially, lateral veins 12–17-paired, veins evident abaxially, slightly impressed adaxially. Inflorescence 6–12-flowered; rachis 30–60 mm, glandular and tomentose. Pedicel ca. 1 cm, glandular-hairy; calyx lobes 6, 1–1.5 mm, glandular-hairy outside; corolla open-campanulate, pink to rose-purple, with dark purple flecks, 3.5–4.5 cm, glabrous within, sparsely glandular outside; lobes 7 or 8, ovate to orbicular, ca. 1.5 × 2 cm, crenulate, slightly emarginate; stamens 14–15, 3–4.5 cm; filaments glabrous; ovary conoid, 4–5 mm, densely glandular-hairy; style 4–4.5 cm, glabrous or with a few glands at base; stigma capitate, small. Capsule cylindric, 18–20 mm. Fl. Apr–May, fr. Jul–Aug.
Evergreen forests; 1700–2400 m. W Sichuan, NE Yunnan.