Figure 2 in Phylogeography of the common toad (Bufo bufo, Lissamphibia: Anura) in Switzerland

Figure 2. Median-joining network of the mitochondrial 16 S rRNA gene in the B. bufo complex and outgroups. Black dots represent single substitution steps. Each haplotype is represented by a circle, with width proportional to frequency. Haplotypes represented by more than three specimens are labelled with a letter (A-M), the legend below the figure lists the associated specimens. The numbers correspond to the specimens listed in Appendix. Specimens from Switzerland in grey.