白色
Southern Hunan (Tiantangshan), northeastern Guangxi (Lingui), western and southwestern Sichuan, northwestern Yunnan (Nanjian, Jingdong), western and northeastern Yunnan, and southern to southeastern Tibet.
Flowering occurs from April to June, and fruiting occurs from September to October.
The umbel inflorescence blooms simultaneously with the leaves, 5-15 cm in diameter, without large sterile flowers. It has reddish-brown glands on the calyx tube, with 5-7 primary rays bearing flowers on the second to third order branches.