Comment on a new classification of the eucalypts

Brooker's classification of the eucalypts, which combines Angophora, Corymbia and Eucalyptus into one genus, is contrary to phylogenetic evidence based on eight different data sets including morphology, RFLPs, and sequence data for various regions of nuclear and chloroplast DNA (5S rDNA spacer region, ITS1, ITS2, trnL intron, trnL-F spacer and psbA-trnH spacer). On this evidence and the principle of recognising monophyletic taxa, we reject his synonymy of these genera.