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2 results for “Spyridium parvifolium”
Data from: Phylogeography and classification of Dusty Miller (Spyridium parvifolium; Rhamnaceae): a morphologically variable shrub from south-east Australia
<p class="Paragraph"><em><span>Spyridium parvifolium</span></em><span> is a widespread and morphologically variable shrub from south-eastern Australia. Several varieties have been recognised and there is disagreement on the accepted taxonomy between Australian states. This study investigated the phylogeography of the species and assessed genetic distinctiveness of its morphological variants. Nuclear ribosomal DNA and complete chloroplast genomes from seventy-three samples of <em>S. parvifolium</em> and seven samples from closely related species were sequenced and analysed using</span> <span>both Bayesian and Maximum Likelihood phylogenetic methods. The results showed incongruence in the placement of several associated taxa (<em>S. cinereum</em>, <em>S. obcordatum </em>and <em>S. daltonii</em>), plausibly due to long-branch attraction, introgression or incomplete lineage sorting. <em>Spyridium parvifolium</em> was resolved as paraphyletic in both phylogenies, with accessions from west of the Murray Darling Depression divergent from those east of the Depression. We found evidence of isolation within <em>S. parvifolium</em> on the inland side of the Great Dividing Range, and recent gene-flow across Bass Strait. The variants of <em>S. parvifolium</em> were not supported as genetically distinct and, with the prevalence of several variants at single sites and morphological intergrades between variants, we conclude that the taxon is a single, morphologically variable species and that no infraspecific classification is warranted.</span></p>
Data from: Phylogeography and classification of Dusty Miller (Spyridium parvifolium; Rhamnaceae): a morphologically variable shrub from south-east Australia
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