Transfers to Simsia and description of Davilanthus, a new genus of Asteraceae (Heliantheae)
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Taxonomic changes are made to reflect a reassessment of morphology based on the results of molecular phylogenetic studies. A new genus, Davilanthus, is described to include six species that collectively form the sister group to Simsia, and includes the following species transferred from Viguiera: Davilanthus davilae, Davilanthus hidalgoanus, Davilanthus hypargyreus, Davilanthus huajuapanus, Davilanthus purpusii, and Davilanthus sericeus. Three species formerly placed in Viguiera ser. Grammatoglossae are transferred to Simsia: Simsia benziorum, Simsia ovata, and Simsia rhombifolia.
Key WordsDavilanthus Simsia Viguiera Helianthinae Asteraceae
We thank G. Beattie, S. Robertson, and D. Schilling for assistance, O. Spring and D. Spooner for help with fieldwork, and B. S. Crozier, D. Spooner, and B. L. Turner for critical reviews of the manuscript. We also thank curators of the following herbaria for specimen loans: CAS/DS, GH, MICH, MINN, MO, NY, RSA, TENN, TEX/LL, UC, US, WIS. Financial support provided by grants from the U.S. National Science Foundation (DEB-9019158 to EES) and the Hesler Fund of the University of Tennessee.
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