Abstract
Three species of Chrysosplenium in Heilongjiang Province, the People's Republic of China were karyomorphologically observed. The chromosome number of 2n=12 for C. ramosum and that of 2n=24 for C. sinicum and C. pseudofauriei var. pseudofauriei were observed and verified the previous reports. The chromosome numbers of C. ramosum and C. pseudofauriei var. pseudofauriei grown and collected in China were observed here for the first time. Chromosome characters of three species for chromosome sizes, chromosome length from the largest to the smallest chromosome in alignment and centromeric positions of chromosome complement were similar to the previous reports; small sizes, bi-modal decrease in chromosome length and consisted of median-, submedian- and subterminal-centromeric chromosomes for C. ramosum, and small sizes, mono-modal decrease in chromosome length and consisted in median- and submedian- centromeric chromosome for C. sinicum and C. pseudofauriei var. pseudofauriei.
