Shrubs or small trees, 4–6 m tall; older branches pale gray-brown, glabrescent; young shoots white-tomentose. Petiole 8–15 mm, tomentose; leaf blade leathery, oblong, or oblong-elliptic, rarely obovate-elliptic, 4–6.3 × 2–3 cm; base rounded, rarely subcordate; margin revolute, ciliate; apex obtuse, apiculate; abaxial surface pale green, midrib brownish pubescent near base; adaxial surface green, glabrous; midrib prominent abaxially, grooved adaxially; lateral veins 13–15-paired, obscure on both surfaces. Inflorescence 3-or 4-flowered; rachis 5–6 mm, sparsely tomentose. Pedicel 1–2 cm, densely tomentose; calyx teeth 5, 1–2 mm; corolla campanulate, purple to pink, with deep purple basal blotch, ca. 3.5 cm; lobes 5, suborbicular, ca. 1.5 × 2 cm, emarginate; stamens 10, unequal, 1.3–2.6 cm, filaments pubescent at base; ovary ovoid, 4–5 × ca. 3 mm, densely woolly-tomentose; style ca. 2.5 cm, glabrous. Capsule cylindric, 20–25 × ca. 7 mm, rough. Fl. Apr–May, fr. Sep–Oct.
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