STUDY ON THE CHEMOTAXONOMY OF ARTEMISIA L. (COMPOSITAE) IN CHINA--The Correlation of Chemical Constitution of the Essential Oil wish the Plant Classification
中国蒿属植物化学分类的初步研究――精油化学成分与系统分类的相关性

The chemica1 constituents of 171essential oil samples of Artemisia L. in China were analysed and 305 compounds were identified. In the samples analysed , 64 species were included and 47 of which were from the sections of Subgen. Artemisia and the rest were from the sections of Sub gen. Dracomcubre (Bess. ) Peterm. According to the analyses, there is a regularity for the distribution of these compounds in above two subgenera. The major constituents of the essential oils from Subgen . Artemisia are monoterpenoids and sesquiterpenoids, while that from Subgen. Dracumculus (Bess. ) Peterm. are sesquiterpenoids and aromatic compounds. It means that the distribution of chemical constituents is correlated with the classification of Artemisia L. , in which the species from more primitive to advanced can be divid ed into 7 sections as follows. Subgen. Artemisia: Sect. Absinthium DC. (monoterpenoids) - Sect. Abrotanum Bess. ( monoterpenords ) - Sect. Artemisia (monoterpenoids) - Sect. Viscidipubes Y. R. Ling (monoterpenoids and sesquiterpenoids)-Sect. Albibractea Y. R. Ling (sesquiterpenoids). Subgen, Drameulus (Bess. ) Peterm. : Sect. Dracunculus Bess, (sesquiterpenoids and aro matic compounds)-Sect. Latilobus Y. R. Ling (sesquiterpenoids and aromatic compounds).