Abstract

Abstract The karyotypes of four species of South American Paullinieae-Sapindaceae are analized for the first time: Paullinia coriacea, 2n= 24= 16m + 6sm + 2st; Serjania cissoides, 2n= 24= 18m + 2sm + 4st ; S. suborbicularis, 2n= 24= 12m + 8sm + 4st and the diploid cytotype of U. ulmacea 2n= 2x= 22= 16m + 6sm. The significance of the results are discussed in relation to previous information for these genera and also in regard to the systematics treatment of this tribe.

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