Analysis of volatile oil in herb of Pimpinella candolleana by SPME-GC-MS Separation and Identification of Thellungianin H from Thellung Pimpinella (Pimpinella thellungiana) Root The Karyotypes of Four Species of Apiaceae from Yunnan,China Separation and Identification of Thellungianin G from the Root of Pimpinella thellungiana Wolff. Pollen Morphology of Sixteen Pimpinella Species (Apiaceae) and the Systematic Analysis Chemical Constituents of the Root of Pimpinella thellungiana Two New Species of Umbelliferae from Xizang Separation and Identification of Thellungianol from Thellung Pimpinella (Pimpinella thellungiana) Isolation and Identification of Thellungianin C and D from the Root of Thellung Pimpinella (Pimpinella thellungiana) New Taxa of the Chinese Umbelliferae (3) New Taxa of the Chinese Umbelliferae (2) Karyotypes of Seven Populations Belonging to Four Species of Umbelliferae in Hengduan Mountains New Taxa of Umbelliferae from China Taxonomic and Floristic Novelties in Chinese Umbelliferae from Qomolangma Region (Xizang, the Himalayas) Studies on Chemical Constituents of the Root of Pimpinella thellungiana Wolff.