白花泡桐Paulownia fortunei (Seem.) Hemsl.

别名：楝桐;南投梧桐;田螺木;通心柴;九重桐;梧桐;福氏泡桐;紫桐;鸡桐树;桐木;白泡桐;花桐;戆树;福穹泡桐;华东泡桐;大戆树;大赣树;川泡桐;空桐木;大果泡桐;海桐;沙桐彭;泡桐;白花桐;桐木树;桐;信桐根;水桐;紫花树;荣桐;毛桐;火筒木;桦桐;华桐;岗桐;冈桐;饭桐子;笛螺木;白桐;通心条;

科名：玄参科 Scrophulariaceae

属名：泡桐属 Paulownia

《中国植物志》第67(2)卷039页
  4.白花泡桐 白花桐（桐谱）、泡桐（本草纲目），大果泡桐（河南），华桐、火筒木、沙桐彭、笛螺木（广东），饭桐子、通心条（广西）图13
  Paulownia fortunei (Seem.) Hemsl. Gard. Chron. ser. III. 7: 448. 1890 et Journ. Linn. Soc. Bot. 26: 180. 1890. p. p. excl. specim. Shangtung; S. Y. Hu, 1. c. 42. 1959;中国高等植物图鉴4: 12.图5438. 1975.——Campsis fortunei Seem. Journ. Bot. 5: 373. 1867. ——Paulownia imperialis auct. non Sieb. et Zucc. : Hance, Journ. Bot. 23: 326. 1886. ——P. mikado Ito, Journ. Hort. Soc. Jap. XXIII. 1: 5. 1910. ——P. duclouxii Dode, Bull. Soc. Dendr. France 162. 1908. ——P. meridionalis Dode, 1. c. ——P. longifolia Hand.-Mazz. Symb. Sin. 7: 832. 1936. nom. nud.
  乔木高达30米，树冠圆锥形，主干直，胸径可达2米，树皮灰褐色；幼枝、叶、花序各部和幼果均被黄褐色星状绒毛，但叶柄、叶片上面和花梗渐变无毛。叶片长卵状心脏形，有时为卵状心脏形，长达20厘米，顶端长渐尖或锐尖头，其凸尖长达2厘米，新枝上的叶有时2裂，下面有星毛及腺，成熟叶片下面密被绒毛，有时毛很稀疏至近无毛；叶柄长达12厘米。花序枝几无或仅有短侧枝，故花序狭长几成圆柱形，长约25厘米，小聚伞花序有花3-8朵，总花梗几与花梗等长，或下部者长于花梗，上部者略短于花梗；萼倒圆锥形，长2-2.5厘米，花后逐渐脱毛，分裂至1/4或1/3处，萼齿卵圆形至三角状卵圆形，至果期变为狭三角形；花冠管状漏斗形，白色仅背面稍带紫色或浅紫色，长8-12厘米，管部在基部以上不突然膨大，而逐渐向上扩大，稍稍向前曲，外面有星状毛，腹部无明显纵褶，内部密布紫色细斑块；雄蕊长3-3.5厘米，有疏腺；子房有腺，有时具星毛，花柱长约5.5厘米。蒴果长圆形或长圆状椭圆形，长6-10厘米，顶端之喙长达6毫米，宿萼开展或漏斗状，果皮木质，厚3-6毫米；种子连翅长6-10毫米。花期3-4月，果期7-8月。
  分布于安徽、浙江、福建、台湾、江西、湖北、湖南、四川、云南、贵州、广东、广西，野生或栽培，在山东、河北、河南、陕西等地近年有引种，生于低海拔的山坡、林中、山谷及荒地，越向西南则分布越高，可达海拔2000米。越南，老挝也有。
  本种树干直，生长快，适应性较强，适宜于南方发展。

《Flora of China》 Vol. 18 (1998)
Paulownia fortunei  (Seemann) Hemsley
白花泡桐   bai hua pao tong
Campsis fortunei Seemann, J. Bot. 5: 373. 1867; Paulownia duclouxii Dode; P. meridionalis Dode; P. mikado T. Ito.
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.
Wild or cultivated. Mountain slopes, forests, mountain valleys, wastelands; below 2000 m. Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hubei, Hunan, Jiangxi, Sichuan, Taiwan, Yunnan, Zhejiang [Laos, Vietnam].
Paulownia fortunei has been recently introduced to Hebei, Henan, Shaanxi, and Shandong.