Japanese Wisteria

Kraunhia floribunda (Wilid.) Taub. ex E. & P. Nat Pfl. 3 3 : 271. 1894.
Glycine floribunda Willd. Sp. PI. 3*: 1066. 1803. Wisteria floribunda DC. Prodr. 2: 390. 1825. Wisteria brachybotrvs Sieb. & Zucc. Fl. Jap. 1: 92. 1826. Kraunhia brachybotrvs Greene. Pittonia 2: 175. 1891. Wisteria mullijuga Van Houtte, Fl. Serres 19: 125. 1872.
A woody vine, 10-15 m. high; branches glabrate; leaves 2-3 dm. long; rachis somewhat silky-strigose when young, soon glabrate; leaflets 15-19, elliptic-ovate to lanceolate, longacuminate, 2-7 cm. long, silky-strigose when young, glabrate in age, acute to rounded at the base; racemes 1-3 dm. long; peduncle puberulent; pedicels 1.5-2 cm. long; calyx puberulent, the tube 3-4 mm. long, 6-7 mm. broad, the upper two teeth obsolete, the lower three broadly deltoid, 1-2 mm. long; corolla bluish-purple, 15-20 mm. long; basal auricles of both the wings and the keel-petals deltoid and porrect; pod 1-2 dm. long, 2 cm. wide, velutinous; seeds 15 mm. long, 10-12 mm. broad, dark-brown. Sometimes confused with Kraunhia sinensis (Sims) Makino, the Chinese Wisteria.
Type locality: Japan.
Distribution: Occasionally escaped from cultivation in the eastern states; native of Japan.