Origin of the grampians shining peppermint - A new subspecies of Eucalyptus willisii ladiges, humphries & brooker

Abstract

Adult morphology, seedling morphology and leaf volatile oil composition are described for a peppermint eucalypt (Eucalyptus aff. willisin restricted to the Grampians, Victoria. Populations were compared with E. willisii collected from Mt Richmond and Wilson's Promontory and the ash, E. pauciflora, collected from the Grampians. Three data sets were independently analysed by using multivariate classification and ordination techniques in order to test the hypothesis that introgression has occurred between E. willisii and E. pauciflora in the Grampians. The hypothesis of introgression was not supported. The Grampians peppermint is a uniform and distinct entity which is not overall intermediate b..