2. Pueraria lobata, the name of traditional Chinese medicine. Korean butterfly beans are distributed in Guangdong and Guangxi. The Flora of Butterfly Bean in Guangdong, China. Erect semi-shrubby herbs, 30-50 cm tall. Having a spindle-shaped root. The stems are cylindrical and densely hairy when young. Leaves alternate, trifoliate, petiole extremely short; Stipules ovate-lanceolate, 5-8 mm long, sparsely hairy, longitudinally veined; Stipules linear conical tip; Leaflets are leathery, the leaves are oblong, the tip 1 is 7-9 cm long or longer, and the width is 2-5.5 cm. The apex is blunt, with a small tip and the base is blunt. Lateral leaflets are small, hairless at the top and densely covered with silver-gray silk hairs at the bottom. Flowers in pairs in leaf axils or very short racemes; Bracts are ovoid, bracteoles are ovoid and oblong, all sparsely hairy and striped; Calyx membranous tubular, long 15- 18 mm, 5-lobed, sparsely hairy, lobes lanceolate, 7-9 mm long; Butterfly corolla, white or light yellow, about 3 cm long, flag flap covered with coarse hair; Stamens10; Ovary stipitate, with many ovules, flat style, inflexed and hairy along the inner surface. Pods are linear, rectangular, 4-7 cm long and have short stalks. The flowering period is from June to July, and the fruiting period is from August to June.