TreeBASE Search-Analyses for study 10634

@INCOLLECTION{TreeBASE2Ref19037, author = {Pauline Y. Ladiges and Michael James Bayly and Gareth Nelson}, title = {East-west continental vicariance in Eucalyptus subgenus Eucalyptus}, year = {2010}, keywords = {}, doi = {}, url = {http://}, pmid = {}, booktitle = {Beyond Cladistics: The Branching of a Paradigm}, isbn = {}, publisher = {University of California Press}, address = {Berkeley CA}, editor = {David M Williams and Sandra Knapp}, pages = {267--303}, abstract = {Eucalyptus subgenus Eucalyptus (commonly called the ?monocalypts?) is well-supported as a monophyletic group, with flowers characterised by a single petaline operculum, lack of free sepals, and anatropous ovules arranged in two rows per loculus. The group, with 111 species in a number of recognisable clades, includes some of Australia?s most important timber trees, such as E. marginata (jarrah) and E. regnans (mountain ash), the latter the tallest flowering plant in the world. The subgenus is distributed in both western and eastern Australia, ranging from tropical to cool temperate latitudes, and is most common in southern coastal and upland regions. A phylogenetic analysis of all taxa is presented based on published morphological analyses of individual clades, and new molecular analyses based on ITS and ETS nrDNA sequences (including 68 sequences newly published here). It is hypothesised that the subgenus was present in the Early Eocene across western and eastern Australia when conditions were warm and wet. The earliest lineages to differentiate are in the south-west of Western Australia, including tall wet forests trees on loamy soils and in river valleys (Jarrah forest bioregion); other clades occur today on lower nutrient soils on weathered lateritic plateau or sands of the Swan Coastal Plain. Mallee species are associated with granitic and quartzite hills, and south coast siliceous and calcareous sands of the Esperance Plains. Marine inundation during the Eocene and major climatic change at the Eocene/Oligocene boundary isolated these western lineages from eastern populations, which form a monophyletic group. Humid conditions persisted in eastern Australia, associated with the elevated Great Dividing Range. The oldest, eastern lineages survive today in Queensland in a climate as warm as that of the Eocene, while more derived clades have evolved in the cooler south-east in a range of environments.} }