Bignonia ghonta Buchanan-Hamilton ex G. Don, Gen. Hist. 4: 222. 1837; Radermachera alata Dop; R. bipinnata (Collett & Hemsley) Steenis ex Chatterjee; Stereospermum ghonta (Buchanan-Hamilton ex G. Don) C. B. Clarke; Tecoma bipinnata Collett & Hemsley.

Shrubs 1.5-2.5(-6) m tall. Branchlets copiously lenticellate. Leaves sparsely pubescent, ca. 38 cm; leaflets ovate-lanceolate, 3-7.5 X 1.5-2.5 cm, base cuneate, margin entire, ciliate, apex long acuminate. Inflorescences cymose-paniculate, terminal, nodding, sometimes flowers densely clustered at peduncle apex, 8-12 cm; peduncle 15-20 cm. Pedicel 1-2 cm, sparsely pubescent. Calyx ca. 1.5 cm, less than 1 cm in diam., apex subtruncate. Corolla lobes semirounded, spreading, red-brown, ca. 1.5 cm, tube dark yellow, 3-6 cm, slightly curved. Filaments filiform, 2-2.5 cm, glabrous; anthers divergent, 2-celled, connective subulate. Style ca. 3 cm, smooth; stigma lingulate. Capsule long terete, ca. 23 X 1 cm, long acuminate at both ends; valves thin leathery; septum membranous. Fl. May-Jun, fr. Nov-Dec.

Evergreen broad-leaved forests, roadsides, slopes; (600-)1300-1800 m. S Yunnan [India, Laos, Myanmar, Nepal, Sri Lanka, Thailand, Vietnam].