灰楸 hui qiu

Catalpa duclouxii Dode; C. fargesii Wilson, C. fargesii f. duclouxii (Dode) Gilmour; C. sutchuenensis Dode; C. vesita Diels.

Trees ca. 25 m tall. Petiole 3-10 cm, glabrous or pubescent; leaf blade ovate or triangular-cordate, 13-20 X 10-13 cm, thick leathery, base truncate or slightly cordate, apex acuminate; lateral veins 4 or 5 on each side of midrib. Inflorescences corymbose-racemose, 7-15-flowered, glabrous or pubescent. Calyx divided nearly to base into 2 parts; lobes ovate-rounded. Corolla campanulate, pale red to pale purple, purple spotted adaxially, ca. 3.2 cm. Stamens included; staminodes inserted at base of corolla tube; anthers divergent, 3-4 mm. Style filiform, ca. 2.5 cm; stigma 2-lobed. Capsule terete, nodding, 55-80 cm; fruiting septum leathery, 2-lobed. Seeds terete, linear, thin membranous, filiform hairy at both ends with hairs 5-6 cm. Fl. Mar-May, fr. Jun-Nov.

* Roadsides, slopes; 700-1300(-2500) m. Gansu, Guangdong, Guangxi, Guizhou, Hebei, Henan, Hubei, Hunan, Shaanxi, Shandong, Sichuan, Yunnan; frequently cultivated.