Fig. 1.

Phylogenetic tree of the Bayesian analysis based on the ‘three-marker data set’. Pseudoturritis turrita was used as the outgroup. Posterior probability values of the nodes are given along the corresponding branches. The first box on the right shows the affiliation of the individual taxa to different clades of Arabideae. The second box provides information about the clade-specific species numbers and, in parentheses, the number of sampled taxa. Four nodes (nodes 2, 3, 9 and 10), which were constrained in the subsequent analyses with the nrDNA ITS marker, are highlighted with their respective symbols of Fig. 2. *In addition, 10 (9) species of the Tomostima clade (annual segregates of Draba).