@article{Steinmann_van Ee_Berry_Gutiérrez_2007, title={The systematic position of Cubanthus and other shrubby endemic species of Euphorbia (Euphorbiaceae) in Cuba}, volume={64}, url={https://rjb.revistas.csic.es/index.php/rjb/article/view/167}, DOI={10.3989/ajbm.2007.v64.i2.167}, abstractNote={<i>Cubanthus</i> (Euphorbiaceae) has traditionally been recognized as a small genus of three similar species restricted to Cuba and Hispaniola. In this study we used DNA sequence data from the nuclear ITS and chloroplast <i>ndhF</i> gene regions to investigate its systematic position and the position of four other shrubby <i>Euphorbia</i> species endemic to Cuba: <i>E. cubensis, E. helenae, E. munizii</i>, and <i>E. podocarpifolia</i>. The results demonstrate that all of these taxa belong to a well-supported Antillean clade nested within <i>Euphorbia</i> that also includes <i>E. punicea</i> and <i>E. gymnonota</i>. For that reason, we treat <i>Cubanthus</i> as a section of <i>Euphorbia</i> instead of a separate genus. <i>Euphorbia</i> sect. <i>Adenorima</i> is relegated to a synonym of sect. <i>Cubanthus</i>. New names are proposed for <i>Cubanthus brittonii</i> and <i>Cubanthus linearifolius</i> (<i>Euphorbia millspaughii</i> and <i>E. scutiformis</i>, respectively), and a new combination is made for <i>Cubanthus umbelliformis</i> (<i>Euphorbia umbelliformis</i>). Section <i>Cubanthus</i> belongs to clade C of <i>Euphorbia</i> and is part of a New World assemblage that includes members of sections <i>Euphorbiastrum, Pteroneurae, Portulacastrum, Stachydium</i>, and the former genus <i>Pedilanthus</i>. Based on both the molecular results and morphological differences, two subsections are proposed: subsect. Cubanthus and subsect. <i>Moa</i>. The molecular phylogeny supports the hypothesis that section <i>Cubanthus</i> radiated entirely within the Antilles and the nearby Bahamian archipelago.}, number={2}, journal={Anales del Jardín Botánico de Madrid}, author={Steinmann, Víctor W. and van Ee, Benjamin and Berry, Paul E. and Gutiérrez, Jorge}, year={2007}, month={Dec.}, pages={123–133} }