CYTOLOGICAL OBSERVATIONS ON TRITICEAE MATERIALS FROM XINJIANG, QINGHAI AND SICHUAN STUDY ON KARYOTYPES OF ARTEMISIA SECT.ARTEMISIA Y.R.LING. IN NORTHEAST CHINA THRESS ASTER SPECIES FROM SOUHERN QING HAI A CYTOLOGICAL OBSERVATION ON 6 LIVERWORTS SPECIES FROM NORTHEAST CHINA Studies on karyotypes of four species of Cymbidium in China Karyotype analysis of Sphallerocarpus gracilis and Trifolium pratense from China Studies on the Karyotypes of Eight Species of Paphiopedilum subgenusbrachypetalum Studies on the Karyotypes of Eight Species of Paphiopedilum subgenusbrachypetalum Karyotype of Solidago canadensis var. gilvocanescens Rydb., A Cultivar in the Asteraceae Chromosome Numbers and Karyotypes of Colutea delavayi (Leguminosae) Endemic to China and Two Adjacent Species New Chromosome Counts and Their Taxonomic Implications in Primulina sensu lato (Gesneriaceae) Cytology of Thirteen Taxa in the Genus Isodon (Lamiaceae: Nepetoideae) from China The Gnetales: Recent insights on their morphology, reproductive biology, chromosome numbers, biogeography, and divergence times Polyploidy and new chromosome counts in Anaphalis (Asteraceae: Gnaphalieae) from the Qinghai-Tibet Plateau of China A Cytotaxonomic Study of Drymotaenium miyoshianum Makino A Comparision among Natural Variations of Dioscorea zingiberensis Karyotype Analysis of Cycas debaoensis The Karyotypes of Four Dunaliella Species (Algae) Chromosome Numbers and Karotypes Analysis of Genus Perilla L Chromosome Numbers and Karyotypes of Genus Salsola in Xinjiang A Survey of Chromosome Numbers from Angiosperms of the Hengduan Mountains,S.W.China