The types of drugs collected by the local standard

The local standard is an implement or supplement of Pharmacopoeia of the People's Republic of China. It usually contains local drugs. For example, Hyoscyamus niger (Tianxianzi) collected by the pharmacopoeia is the seed of henbane (Langdang) belonged to the plant of family of aubergine, but for people in Guangdong and Jianxi Provinces it is the seed of the family of Acanthaceae known as "South Tianxianzi". According to statistics, there are more than 200 kinds of drugs being used by different ways in difference regions. Most common ones are Viola yedoensis or V. japonica or Gueldenstaeddtua multiflora or G. pauciflora (Diding), Pulsatilla chinensiss or P. dahurica or P. koreana or P. ambigua (Baitouweng), Dryonteris crassirhizoma or Lunathyrium acrostichoides or Matteuccia struthiopteriss or Osmunda japonica or Blechnum orientale or Brainia insignis or Woodwardia japonica (Guanzhong), Clerodendron cytrtophyllum or Polygonum tinctorium or Isatis tinctoria or I. Indigotica or Baphicacanthrs cusia (Daqingye), etc.

There has been no national regulation for local standards in China yet. The regional common used medicinal materials occupy a great proportion in each local standard. For example, only 11% kinds of materials recorded in The Standard of Chinese Medicinal Materials in Sichuan Province were collected by Pharmacopoeia of the People's Republic of China. While 72% of the materials collected by The Standard of Chinese Medicinal Materials in Yunnan Province belong to the regional materials. The regional drugs show local characteristic markedly. For instance, this kinds of medicinal materials include those come from Sichuan province, such as Ligusticum glaucescens (Aba Danggui), Arisaema consanguineum or A. japonicum (Chuanzhong Nanxing), Codonopsis tangshen (Chuan Dangshen), Paaeonia szechuanica (Sichuan Mudan), Solomon's seal (Kangding Yuzhu), and Aristolochia debilis (Chuannan Madouling); or such materials from Yunnan Province as Paeonia lactiflora (Yunnan Baishao), Psammosilene tunicoides (Jintiesuo), Codonopsis convolvulacea var. forrestii (Zhuzishen), Dioscorea cirrhosa (Shulang), and Semen zziziphi spinosae (Li zaoren).