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FOC | Family List | FOC Vol. 18 | Bignoniaceae | Catalpa

2. Catalpa tibetica Forrest, Notes Roy. Bot. Gard. Edinburgh. 13: 155. 1921.

藏楸 zang qiu

Shrubs or small trees, ca. 5 m tall. Leaves broadly ovate, ca. 23 X 22 cm, thin leathery, dark green and glabrous adaxially, pale green and densely pubescent abaxially, basally 5-veined, base slightly cordate or truncate, margin entire, apex acuminate or obtuse. Inflorescences corymbose-paniculate, 16-25 cm, glabrous. Calyx divided to base into 2 parts; lobes navicular. Corolla yellow-white, pale purple spotted at throat, ca. 4.5 cm; tube enlarged basally, 2.5-4 cm in diam. at mouth; limb nearly bilabiate; lobes rounded, glabrous. Stamens inserted at base of corolla tube; staminodes minute. Ovary glabrous. Stigma 2-lobed. Capsule terete, striate, ca. 30 X 1 cm. Seeds ellipsoid, thin membranous, filiform pubescent at both ends. Fl. May-Jun, fr. Aug-Sep.

* Slopes, forests; 2400-2700 m. SE Xizang, NW Yunnan.


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