Abstract:The present paper deals with the karyotypes of Chlorophytum malayense Ridley and Diuranthera major Hemsl. It is found that both of these 2 species are diploids with chromosome number 2n=56. The karyotype formula of Chlorophytum malayense Ridley is K(2n)=56=20m(2SAT)+23sm+13st, belonging to " 3C" of Stebbins‘ karyotypic symmetry, and that of Diuranthera major Hemsl. is K(2n)=56=20m+22sm+14st, belonging to "3C". It seems that Diuranthera Hemsl. is more advanced than Chlorophytum Ker-Gawl.