Fig. 7 in High genetic and morphological diversification of the Euphorbia verrucosa alliance (Euphorbiaceae) in the Balkan and Iberian peninsulas

Fig. 7. Elevational distribution of diploid (2x) and tetraploid (4x) populations of Euphorbia flavicoma, E. verrucosa, E. serpentini (E. serp.) and E. montenegrina, following their distribution from west to east and with increasing elevation within each group. Elevational data were recorded in the field and are given in supplementary Table S1.