title: [Discussion on forming pattern of dao-di herbs Ligusticum chuanxiong].
abstract: As a famous-region Dao-di Herbs, Ligusticum chuanxiong which mainly grows in the west of the upper reaches of Jinma River in Dujiangyan for a long time. In recent years, the history, species and origin of L. chuanxiong were researched by many scholars. However, the forming pattern of Dao-di herbs of L. chuanxiong has not been reported systematically. Basing on the general principles of the formation of Dao-di herbs, it can be concluded that the forming pattern of L. chuanxiong is the type of two determinants, which are combined both unique ecological environment of genuine regions and advanced cultivation techniques.
authors.affiliation: College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China. chen_lin0000@yahoo.com.cn
authors.forename: Lin
authors.initials: L
authors.lastname: Chen
authors.forename: Cheng
authors.initials: C
authors.lastname: Peng
authors.forename: Youping
authors.initials: Y
authors.lastname: Liu
authors.forename: Hongping
authors.initials: H
authors.lastname: Chen
authors.forename: Chubing
authors.initials: C
authors.lastname: Xiang
mesh_terms: D002681:China; D004463:Ecology; D030004:Ligusticum / Q000254:growth & development*