抄録
In the previous report the author (1954) observed the chromosome behavior during meiosis in Meletha rotuudifolia(L.) HUDS. a species possessing the least chromosome number(2n=24)in the genus Me, etha, and described that the above mentioned species is tetraploid consisted of four genomes and very close affinity exists between these genomes. I, n the present report thLe author studied the chromosome behavior during meiosis in one variety of M. viridis L. subsp. crispata BRIQ. usually known as spearmint, which has twofold chromosome number (2n=48) in comparison with the above-mentioned species, ancl the re3ults obtained may be summerized as follows :
