Números cromosómicos de especies de Mimosa (Leguminosae) de Paraguay

In the present study the chromosome numbers of Mimosa xanthocentra subsp. subsericea varo subsericea, M. balansae, M. chacoensis, M. rojasiiall with 2n=26 and M. lupinoides with 2n=52 are reported for the first time. The 2n=52 of M. somnians subsp. viscida vara viscida and of M. somnians subsp. somnians vara somnians are new and differ from the 2n=26 published before for M. somnians varo somniansof Argentina. M. debiliswith 2n=26 also differs from the numbers reported previously for M. debilis varo debilis from Argentina with 2n=52. The 2n=26 of M. bimucronata vara adenocarpa coincides with the reported number for M. bimucronata varo bimucronata, and the number of M. polycarpa varo spegazzinii with 2n=26 is confirmed.