Figure 3From: Comparative phylogeography of two related plant species with overlapping ranges in Europe, and the potential effects of climate change on their intraspecific genetic diversityGeographical distribution of O. secunda nuclear ITS haplotypes. Pie chart sizes are approximately proportional to sample size, with the smallest circles representing N = 1 and the largest representing N = 8. Inset shows the phylogenetic relationships between the five haplotypes.Back to article page