Tracing the Origin of the Bimodal Karyotypes of the Tribe Lilieae (Liliaceae) Based on Comparative Karyotype Analyses Karyotypes of Twenty-five Populations of Thirteen Species in Nomocharis and Lilium Cytologyof 12 species in Aconitum L. and of 18 species in Delphinium L. of the tribe Delphineae (Ranunculaceae) from China Karyotype Comparison Between Genera in Magnoliaceae Karyotype Analysis of Eremurus in Xinjiang A NEW METHOD OF KARYOTYPE ANALYSIS——NATURAL KARYOTYPE Karyotype Evolution Trend in Ginkgo biloba Special Germplasms