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10 results for “Spyridium”
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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Fig. 4 in Big trees of small baskets: phylogeny of the Australian genus Spyridium (Rhamnaceae: Pomaderreae), focusing on biogeographic patterns and species circumscriptions
Fig. 4. Distributions of samples of S. phylicoides, S. sp. Red Dots (J.Kellermann 689) and S. sp. Dwarf (J.Kellermann 579) used in this study. For S. phylicoides, samples are coloured by the clades in which they are placed in the nrDNA tree (Fig. 2), with the distribution of the species, on the basis of the records in the Atlas of Living Australia (2020), also shown (grey dots).
Fig. 2 in Big trees of small baskets: phylogeny of the Australian genus Spyridium (Rhamnaceae: Pomaderreae), focusing on biogeographic patterns and species circumscriptions
Fig. 2. Nuclear rDNA (nrDNA) phylogeny of Spyridium, based on Bayesian inference (BI) analysis. Bayesian posterior probabilities (PP) and ultrafast bootstrap (UFBS) values are shown at nodes when <95%; values ≥95% are not shown. Where one value for a node is supported (≥95%) and the other for that node is unsupported (<95%), only the unsupported value is shown. Where a hyphen (-) is provided at a node, this node varied in resolution in the ML tree and was therefore not transferable to the BI phylogeny. Colour coding of clades and taxa in the bar to the right of the tree matches that used on maps in Fig. 3, 4. Labels are given for some clades (A–J) and subclades (A1–J3) discussed in text. Species polyphyletic across clades are highlighted in red text. Monophyletic taxa with supported nodes are highlighted in green text. Note: S. eriocephalum is polyphyletic, but var. eriocephalum is monophyletic (and therefore coloured half red and half green). Dashed lines associated with S. tricolor, S. glaucum, S. phlebophyllum and S. subochreatum E.D.Adams 21/0907 are provided as reference points connecting taxa to the sidebar.
Fig. 1 in Big trees of small baskets: phylogeny of the Australian genus Spyridium (Rhamnaceae: Pomaderreae), focusing on biogeographic patterns and species circumscriptions
Fig. 1. Distribution of Spyridium in Australia. Dots represent filtered records accessed from Atlas of Living Australia (2020). States and territories are also high-lighted as follows: WA, Western Australia; SA, South Australia; NT, Northern Territory; Qld, Queensland; NSW, New South Wales; ACT, Australian Capital Territory; Vic., Victoria and Tas., Tasmania.
Fig. 5 in Big trees of small baskets: phylogeny of the Australian genus Spyridium (Rhamnaceae: Pomaderreae), focusing on biogeographic patterns and species circumscriptions
Fig. 5. Chloroplast genome (cpDNA) phylogeny of Spyridium, based on Bayesian inference (BI) analysis. Bayesian posterior probabilities (PP) <0.95 and ultrafast bootstrap (UFBS) values are shown at nodes when <95%; values ≥95% are not shown. Where one value for a node is supported (≥95%) and the other for that node is unsupported (<95%), only the unsupported value is shown. Where a hyphen (-) is provided at a node, this node varied in resolution in the ML tree and was therefore not transferable to the BI phylogeny. Coloured bar to the right of the tree indicates placement of samples in the nrDNA phylogeny (i.e. matching the coloured bar on Fig. 2). Labels are given for some clades (K–Q) and subclades (M1–Q2) discussed in text. Species polyphyletic across clades are highlighted in red text. Monophyletic taxa with>0.95 PP support are highlighted in green. Dashed lines associated with S. tricolor, S. glaucum, S. phlebophyllum and S. subochreatum E.D.Adams 21/0907 are provided as reference points connecting taxa to the sidebar.
Fig. 3 in Big trees of small baskets: phylogeny of the Australian genus Spyridium (Rhamnaceae: Pomaderreae), focusing on biogeographic patterns and species circumscriptions
Fig. 3. Distributions of nrDNA clades of Spyridium, colour-coded to match groups shown in Fig. 2. Clade distributions are based on those of included species, using records in the Atlas of Living Australia (2020). Distributions of S. phylicoides, S. sp. Dwarf (J.Kellermann 579) and S. sp. Red Dots (J.Kellermann 689) have been omitted from these maps and are provided in Fig. 4. (a) Distribution of Clade A1 (mid blue), Clade A2 (royal blue), S. tricolor (light blue) and S. glaucum (dark blue). The location of sample CC545 (S. tricolor) is highlighted. (b) Distribution of Clade C. The general location of the southern transition zone is also highlighted. (c) Distribution of Clade D. (d) Distribution of Clade E. (e) Distribution of S. phlebophyllum. (f) Distribution of S. eriocephalum var. eriocephalum from Clade F. (g) Distribution of Clade G. The location of sample CC566 (S. sp. Wollar) is highlighted. (h) Distribution of Clade H. (i) Distribution of Clade I, excluding S. phylicoides and S. sp. Dwarf (J.Kellermann 579). (j) Distribution of Clade J1 (bright pink), Clade J2 (deep pink) and Clade J3 (light pink). The location of sample E.D.Adams 21/0907 (S. subochreatum) is highlighted (dark grey). Spyridium phylicoides and S. sp. Red Dots (J.Kellermann 689) have been excluded from this map.
Fig. 3 in Big trees of small baskets: phylogeny of the Australian genus Spyridium (Rhamnaceae: Pomaderreae), focusing on biogeographic patterns and species circumscriptions
Fig. 3. (Caption on next page)
Fig. 2 in Big trees of small baskets: phylogeny of the Australian genus Spyridium (Rhamnaceae: Pomaderreae), focusing on biogeographic patterns and species circumscriptions
Fig. 2. (Caption on next page)
Fig. 5 in Big trees of small baskets: phylogeny of the Australian genus Spyridium (Rhamnaceae: Pomaderreae), focusing on biogeographic patterns and species circumscriptions
Fig. 5. (Caption on next page)
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