Journal article

A chloroplast phylogeny of Zieria (Rutaceae) in Australia and New Caledonia shows widespread incongruence with species-level taxonomy

Rosemary A Barrett, Michael J Bayly, Marco F Duretto, Paul I Forster, Pauline Y Ladiges, David J Cantrill

Australian Systematic Botany | CSIRO PUBLISHING | Published : 2014


This study presents a molecular phylogeny of Zieria Sm., a genus of shrubs and small trees, with 59 species in Australia and one endemic to New Caledonia. The phylogeny is based on four cpDNA markers and 116 samples representing all species of Zieria except one, and the monotypic outgroup Neobyrnesia suberosa. The New Caledonian species, Z. chevalieri, was resolved as sister to a well supported clade of all Australian taxa. There was widespread incongruence between the cpDNA tree and species-level taxonomy, with 14 species shown as polyphyletic or paraphyletic. These included widespread species (e.g. Z. smithii and Z. arborescens, each falling in at least four well supported clades) and some..

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Awarded by Australian Research Council

Awarded by Bush Blitz PhD Research Supplement

Awarded by Australian Biological Resources Study

Funding Acknowledgements

For assistance with field work or provision of specimens we thank Erin Batty, Gill Brown, Paul Carmen, Mike Mathieson, David Meagher, Tundra Morscheck, Jerome Munzinger, Daniel Ohlsen, Megan Thomas and Zoe Smith. Plant collecting permits were provided by the Victorian Department of Sustainability and Environment, NSW National Parks and Wildlife Service, Queensland Environmental Protection Agency, Royal Botanic Gardens Melbourne, Australian National Botanic Gardens, the Australian Department of the Environment, and conservation authorities of the North Province of New Caledonia (DDEE). We thank the directors of BRI, MEL and NSW for specimen loans and for permission to destructively sample material for molecular analysis. This study was funded by the Australian Research Council (LP0776737), a Bush Blitz PhD Research Supplement to R. Barrett (BBC210-24), grants from the Australian Biological Resources Study (PD208-02; RFL210-17), and was supported by the Alfred Nicholas Fellowship, The University of Melbourne School of Botany Foundation, the Australasian Systematic Botany Society (Hansjorg Eichler Scientific Research Fund Grant), The Soroptimist International of the South West Pacific (Dame Margaret Blackwood Soroptimist Scholarship) and an Australian Post Graduate Award.