Shrubs deciduous, 1.5–4 m tall. Twigs pilose or subglabrous. Leaf petiole 1–2 cm, glabrous; leaf blade elliptic, rhombic-elliptic, or lanceolate, 5–9 × 1.7–4 cm, thinly leathery, glabrous except abaxially densely floccose towards base on midvein, midvein distinct on both surfaces, secondary and fine veins inconspicuous on both surfaces, base cuneate, margin entire or sinuolate-serrulate towards apex, apex acuminate or abruptly acuminate. Inflorescence umbellate, 2–7-flowered. Pedicel recurved, 1–1.5 cm, pilose. Calyx glabrous; lobes lanceolate, 2.5–3 mm. Corolla white, tubular-campanulate, gibbous at base, 8–9 mm; lobes recurved, broadly ovate, ciliate. Filaments pilose. Ovary glabrous. Capsule 8–11 mm tall; stalk erect, 2–3.5 cm. Fl. Apr–Jun, fr. Jul–Sep.
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