The main producing areas are in the southwest of Shandong Province and the east of Henan Province, with a vertical distribution of about 1400 meters above sea level. The trunk of Paulownia is straight, the crown is wide, and most of them are oval or oblate. The bark color is grayish brown. Small branches grow between each other. The shape of leaf blade is ovate or broad ovate. The inflorescence is narrow and cone-shaped, the flowers are large, the calyx is bell shaped and inverted cone-shaped, the Corolla is bell shaped and funnel-shaped, and the color is light purple. The shape of capsule is mostly oval, with fine hair outside, not sticky. Its seeds are small and oval.
It is distributed in the provinces from the Yellow River basin to the Yangtze River Basin, mainly in Shaanxi and the west of Henan. The trunk of the variety is mostly low and curved, and the crown is umbrella shaped. Branchlets, leaves, flowers and fruits are hairy. Leaves ovate or broadly ovate. The inflorescence is broadly cone-shaped, the flower bud is nearly spherical, the calyx is deeply split, the Corolla is bell shaped, bright purple or blue purple. Capsule ovoid
The main production areas are in the provinces south of the Yangtze River Basin. In addition, it is distributed in Dabie Mountains, Guangdong, Guangxi, Taiwan, Yunnan, Sichuan, etc. The tree energy of this variety reaches 27 meters. Young branches and young leaves are covered with branched hairs and glandular hairs. Leaf heart long ovate, entire, panicle cyme, corolla color white or lavender, calyx lobed. Capsule length is about 6 - 10 cm, elliptic, pericarp woodiness is thicker.
It is distributed in Sichuan, Yunnan, Guizhou, Western Hubei and Southwest Hunan. The vertical distribution can reach 1200-3000m above sea level. Densely stellate tomentose, glabrous on branches and leaves. The shape of leaf blade is heart-shaped or broad ovate, not sticky. Corolla campanulate, mostly white or purple, campanulate calyx, lobes ovate, not retrorse. Capsule about 4 cm long, oval, leathery pericarp.
