Karyomorphology of four species in Cimicifuga (Ranunculaceae) from China, with some cytogeographical notes on C. foetida
国产毛茛科升麻属四种植物的核形态研究，并略论升麻的细胞地理

In this paper, four species of the genus Cimicifuga L. from China(C. acerina, C. simplex, C. yunnanensis, C. foetida var. foetida and C. foetida var. velutina) were karyomorphologically investigated. All the taxa studied had the same chromosome number of 2n=16 except for C. foetida var. foetida, in which a tetraploid cytotype was found to occur in northwestern Yunnan. Their karyotypes are all presented. The chromosome counts in C. yunnanensis and C. foetida var. velutina are reported here for the first time.