Erect shrubs, to 3 m; branches subverticillate, densely coarsely red-brown-strigose, hairs flat. Leaves all similar. Leaf blade leathery, oblong to obovate or broadly ovate, 0.8–1.5 × 0.3–0.5 cm; base cuneate; margin finely crenate; apex acute and mucronate; abaxial surface coarsely red-brown-setose on midrib and margin, otherwise glabrous; adaxial surface sparsely red-brown-strigose at first. Inflorescence 3-flowered. Pedicel 0.4–0.6(–0.8) cm, densely coarsely strigose, hairs flat; calyx lobes round, small, coarsely red-brown-strigose; corolla rotate-funnelform, white, pale purple or purple, ca. 0.6 × 0.7 cm; tube ca. 3 mm, outer surface reddish glandular-hairy, inner surface puberulent; lobes spreading, ovate, ca. 0.3 cm, glabrous; stamens 5, subequal, ca. 0.7 cm, slightly exserted, filaments flat and puberulent below; ovary ovoid, ca. 3 mm, densely coarsely red-brown-strigose; style ca. 0.8 cm, longer than stamens, sparsely shortly glandular-hairy below. Capsule ca. 3 mm, densely strigose. Fl. Apr–May, fr. Jun–Aug.
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