Abstract
Karyomorphology of nine species of Blumea has been presented such as B. barbata (2n=16), B. fistulosa (2n=18), B. jacquemontii (2n=18), B. lacera var. glandulosa (2n=36), B. malcolmei (2n=16), B. menzbranacea var. gardneri (2n=18), B. oxyodonta (2n=18), B. virens (2n=18) and B. wightiana (2n=18).
Karyotypes of both the x=9 and x=8 species are moderately asymmetrical (2A and 2B). In finer details, the karyotypes of x=9 species are seen to be more specialized. Five x=9 species showed bimodal karyotypes and in all of them the short chromosomes greatly outnumbered the long ones.
Species possessing bimodal karyotypes showed more advanced morphological characters, and this appears to indicate an association between karyotype specialization and morphological advancement of plants in the genus.
