Chromosome Numbers of Some Species in the Family Magnoliaceae in China
中国部分木兰科植物染色体数目

The present work reports the chromosome numbers of 30 species of 7 ge- nera of Magnoliaceae in China. The chromosome numbers of Liridendron chinense, Ma- gnolia officinalis, M. liliflora, Michelia rigo and M. champaca are consistent with those previously reported Magnolia denudata was reported 2n=114, but our result shows 2n= 76; M. grandiflora was reported 2n=112, 114, but here 2n=114. Chromosome numbers of the other 23 species are reported for the first time. Vouchers for experimental materi- als have been preserved in Herbarium of the Department of Biology, Nankai University, Tianjin.