Fig. 1.

Phylogenetic tree of Salvia s.l. defining the major clades (Walker and Sytsma, 2007, simplified, i.e. nodes with bootstrap values <75 % were collapsed). Strict consensus tree based on the combined analysis of trnL-F and ITS data; MP. Non-Salvia genera are highlighted (bold); NW Salvia is highlighted in light grey and OW taxa in dark grey. Numbers in parentheses, separated by slashes, indicate the number of African species and the total number of taxa in the corresponding clade in their analyses.