Trees, rarely shrubs, (2–)6–10 m tall; branchlets and petioles glabrous. Petiole 15–25 mm, glabrous; leaf blade thickly leathery, elliptic, oblong-elliptic or obovate-elliptic, 6–10 × 4–6.5 cm; base obtuse or subrounded; apex rounded; abaxial surface initially yellow, later deep brown, compacted tomentose, hairs stellate; adaxial surface glabrous. Inflorescence racemose-umbellate, 10–14-flowered; rachis ca. 20 mm, glabrous. Pedicel purplish, 1.5–2.5 cm, densely white puberulent; calyx lobes 5, ca. 2 mm, acute, puberulent; margin ciliate; corolla campanulate, outer surface slightly purplish, on drying become whitish, slightly orange and puberulent at base inside, with crimson spots on upper lobes, ca. 4 × ca. 4 cm, lobes 5; stamens 10, unequal, filaments pubescent at base; ovary and style glabrous; style shorter than corolla and longer than stamens, stigma capitate. Capsule cylindric, brown, 20–25 × ca. 6 mm. Fl. Jun, fr. Sep.
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