(a,c) Geographical distribution and genetic distances among nSSR Bayesian genetic clusters of (a) S. zenkeri (10 loci, 240 individuals) and (c) G. suaveolens (8 loci, 450 individuals). Only non-admixed individuals, i.e. showing more than 70% ancestry in the Bayesian clustering, are represented. Neighbour-joining trees were built from pairwise FST among nSSR genetic clusters. Heat maps represent interpolation surfaces of FST implemented with SPADS. (b,d) Geographical distribution and genealogy of trnC-petN1R for (b) S. zenkeri (17 haplotypes, 192 individuals) and (d) G. suaveolens (16 haplotypes, 260 individuals).