a–c Multivariate clustering generated from chromosome morphometric data (total, long and short arms length). Mojena’s criteria showed three clusters for M. parvifolia (a), M. coriacea (b) and M. umbellata (c) with cut point between 1.5 to 1.8. This analysis confirmed the morphological discrepancy of the chromosome 1, and the similarity of other chromosomes (d) Graphic provided by comparison between mean relative size (% size in relation to sum of the mean values of total length, Table 1) of each chromosome of M. coriacea and M. umbellata. The chromosomes 1, 2, 6, 7, 11, 14, 19 and 23 (*) between the species are statistically different in relation to mean relative size according to Scott Knott test at 5% of probability.