title: [Preliminary survey on medicinal plants of Polygonum in Gansu Province].
abstract: OBJECTIVE
  To gain a clear idea on the resources of medicinal plants of Polygonum in Gansu.
  
  
  METHODS
  Field investigation, specimen collection, taxonomic study, scientific names study and literature retrieval were carried out.
  
  
  RESULTS
  The distribution, ecological environment and medicinal parts of 23 species and 7 varieties of Polygonum from Gansu have been clarified.
  
  
  CONCLUSIONS
  The investigation may prove to be useful for the utility and further study of Polygonum in Gansu province.
authors.affiliation: Lanzhou Medical College, Lanzhou 730000.
authors.forename: Huanyang
authors.initials: H
authors.lastname: Qi
authors.forename: Yongjian
authors.initials: Y
authors.lastname: Yang
authors.forename: Runeng
authors.initials: R
authors.lastname: Zhao
mesh_terms: D002681:China; D003247:Conservation of Natural Resources; D017753:Ecosystem; D010598:Pharmacognosy; D010946:Plants, Medicinal / Q000145:classification; D028502:Polygonum / Q000145:classification