Abstract:Karyotypes of 3 species in Lysimachia were investigated.The chromosome numbers and karyotypes of two species,namely,L.lobelioides Wall.(2n=2x=24=12m 10sm 2st) and L.rubiginosa Hemsl.(2n=2x=24=4m 6sm 6st 8t),are reported here for the first time.The other s