New Taxa of Heracleum L. (Umbelliferae) from China Studies on Karyotypes of the Genus Heracleum from China Karyotype and cytogeography of the genus Heracleum (Apiaceae) in the Hengduan Mountains Studies on chemical constituents in roots of Heracleum rapula A NEW SPECIES OF HERACLEUM FROM XIZANG (TIBET) New Taxa of the Chinese Umbelliferae (2) A STUDY OF THE CHINESE DRUGS OF UMBELLIFERAE V. CHEMICAL CONSTITUENTS OF THE ROOTS OF HERACLEUM HENRYI WOLFF COUMARINS OF HERACLEUM CANDICANS COUMARINS OF HERACLEUM STENOPTERUM A STUDY OF CHINESE DRUGS OF UMBELLIFERAE VII. CHEMICAL CONSTITUENTS OF THE R0OTS OF HERACLEUM CANDICANS WALL (1 ) Cladistics of Heracleum in China Studies on chemical constituents in roots of Heracleum rapula Plant Regeneration from Cell Supension Derived Protoplasts of Heracleum moellendorffii Coumarins of Heracleum yunngningense Hand.-Mass ANATOMICAL STUDIES ON PETIOLE OF HERACLEUM FROM CHINA POLLEN MORPHOLOGY OF THE GENUS HERACLEUM L. FROM CHINA AND ITS TAXONOMIC AND EVOLUTIONARY SINGNIFICANCE Separation and purification of coumarins from Heracleum millefolium by high-speed counter-current chromatography Phylogenetic Position of Anegelica apaensis/Heracleum apaense Based on Evidence from ITS Sequences of Nuclear Ribosomal DNA Nomenclatural novelties in the Apiaceae (Umbelliferae)