Maximum likelihood phylogenetic tree (TVM+I+G4 model) obtained from SSU (28S) partial sequences; mainly based on the data used by Perkins et al. (2009) [48] with the addition of several new sequences, including our new sequence of Tristoma integrum. The tree with the best likelihood is shown and ML bootstrap support values are indicated. The scale indicates the number of substitutions per site. The subfamily Capsalinae is indicated on the right. All other clades are a mixing of several subfamilies traditionally recognised by morphology and subfamilies are thus not indicated.