Trees, to 30 m tall; crown conical; young shoots, inflorescences, and fruit yellowish brown stellate tomentose. Trunk straight, ca. 2 m d.b.h.; bark gray-brown. Petiole ca. 12 cm, glabrous; leaf blade narrowly ovate-cordate, occasionally ovate-cordate, to 20 cm, 2-parted on new shoots, abaxially stellate hairy or glandular, tomentose when mature, and rarely sparsely hairy or glabrous, adaxially glabrous. Thyrses narrow and long, subcylindric, ca. 25 cm; cymes 3-8-flowered; peduncle as long as pedicels. Pedicel glabrous. Calyx obconical, 2-2.5 cm; lobes 1/4-1/3 of calyx length, ovate to triangular-ovate, narrowly triangular in fruit. Corolla white, purple, or light purple, tubular-funnelform, 8-12 cm; tube enlarged gradually, slightly bent forward, ventrally weakly ridged, outside stellate pilose. Stamens 3-3.5 cm, sparsely glandular hairy. Ovary glandular, occasionally stellate hairy. Capsule oblong to oblong-ellipsoid, 6-10 cm; beak to 6 cm; pericarp woody, 3-6 mm thick; persistent calyx 3-6 mm, woody. Seeds 6-10 mm including wing. Fl. Mar-Apr, fr. Jul-Aug.
Mountain slopes, forests, mountain valleys, wastelands; at elevations up to 2,000 metres.
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Mountain slopes, forests, mountain valleys, wastelands; at elevations up to 2,000 metres.
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