title: [Identification on crude drugs from genus Leonurus: II. Leaf and flower surface characters].
abstract: OBJECTIVE
  To identify the crude drugs originated from 9 species and 1 variety of genus Leonurus (called Yimucao) through leaf and flower surface characters.
  
  
  METHODS
  Routine slide processing and the characters under microscope were observed and compared.
  
  
  RESULTS
  Obvious characteristics for identification were revealed.
  
  
  CONCLUSIONS
  The shape and length of non-glandular hairs are useful in identifying this sort of crude drugs. Leaf constants and cluster crystals are also useful as reference. However, pollen grains and secretory tissues are worthless.
authors.affiliation: Faculty of Pharmacognosy, Shanghai University of Traditional Chinese Medicine, Shanghai 200032.
authors.forename: Z
authors.initials: Z
authors.lastname: Chao
authors.forename: X
authors.initials: X
authors.lastname: Zhou
authors.forename: L
authors.initials: L
authors.lastname: Ma
authors.forename: B
authors.initials: B
authors.lastname: He
mesh_terms: D031332:Leonurus / Q000033:anatomy & histology* / Q000145:classification; D018515:Plant Leaves / Q000033:anatomy & histology; D010946:Plants, Medicinal / Q000033:anatomy & histology*; D013045:Species Specificity