1.The report on the chromosome number n = 13 and 2n = 26 inGaruga pinnatawas first determined by the author in 1961.2.In the present communication, karyotype analysis of the species has been worked out in detail and probably this is the first exploration of the karyotype of the member in the family Burseraceac.3.Six distinguishable types of chromosomes have been revealed during karyological analysis of the species.4.Of the 13 pairs of chromosomes, 8 pairs are medianly constricted and 5 pairs having subterminal centromeres of which one pair of chromosomes is long and secondarily constricted.5.On the basis of karyotype analysis, an interpretation of the phylogeny of the taxon has been attempted.