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2 results for “Distephanus”
Data from: Molecular phylogenetics of Distephanus supports the recognition of a new tribe, Distephaneae (Asteraceae)
<p>The genus <em>Distephanus</em> Cass. comprises 43 distinctive species of shrubs and small trees that have been placed historically within the ironweed tribe, Vernonieae (Asteraceae). Utilizing the most expansive sampling of <em>Distephanus </em>to date, this study aims to test the monophyly of this genus and facilitate its classification. Molecular phylogenetic analyses were conducted using four molecular markers from the nuclear and plastid genomes. These data also supported divergence dating analyses that were performed to understand the timing of diversification events within <em>Distephanus</em> and other related genera. Results from this study indicate that as currently circumscribed, Vernonieae is not monophyletic and that <em>Distephanus </em>is actually sister to a clade that comprises Vernonieae and another tribe, Moquinieae, which only includes two species restricted to Brazil. Based on these findings, <em>Distephanus </em>is recognized in a new tribe that we describe here, Distephaneae. This new tribe comprises 41 species of <em>Disptehanus</em> that are easily distinguished from Moquinieae and Vernonieae based on the presence of florets with yellow corollas and trinervate leaves.</p>
Data from: Molecular phylogenetics of Distephanus supports the recognition of a new tribe, Distephaneae (Asteraceae)
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