A NEW DISCOVERY IN BUPLEURUM SCORZONERIFOLIUM INVESTIGATION Chromosomal Study on Chinese Bupleurum L.(Apiaceae) Classification and Distribution of Bupleurum L.(Umbelliferae Juss.)in Mongolia Resources of Bupleurum L. plants in Gansu Province and their commercial investigation Identification of Bupleurum L.plants by RAPD technology STUDY ON SEED FREE AMINO ACID OF THREE SPECIES OF BUPLEURUM L. IN NORTHEAST CHINA CYTOTAXONOMICAL STUDIES ON BUPLEURUM L. IN NORTHEAST CHINA Ⅰ. KARYOLOGY ANALYSIS OF SIX TAXA AND THEIR SIGNIFICANCE OF TAXONOMY