Shrubs, 3–4 m tall; branchlets subterete, 8–10 mm in diam., densely fawn to grayish branched-pubescent when young. Petiole stout, 10–20 mm, densely gray branched-villous; leaf blade thickly leathery, oblong-elliptic to elliptic, 9–12.5 × 3.5–4.5 cm; base cordate to rounded; margin slightly revolute; apex acuminate; abaxial surface brown to yellowish brown, indumentum thick, 1-layered, densely villous, hairs multi-branched; adaxial surface with grooved midrib tomentose, otherwise glabrous. Inflorescence umbellate, 6–8-flowered; rachis ca. 3 mm; perulae deciduous. Pedicel 1–2 cm, densely branched-villous and with long-stalked glands; calyx yellow-green, lobes 5, 2.5–3 mm, broadly triangular, sparsely villous, margin ciliate with long-glandular hairs; corolla funnelform-campanulate, white, with copious carmine spots, 4–4.5 × ca. 4.5 cm; lobes 5, ca. 1.5 × 2.3 cm, emarginate; stamens 10, unequal; filaments glabrous or puberulent at base; ovary 5–6 mm, densely long-glandular-hairy, villous towards apex; style ca. 2.8 cm, shorter than corolla and longer than stamens, densely villous and long-glandular-hairy below middle; stigma discoid. Fl. May.
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