four new vining species of solanum (dulcamaroid clade) from montane habitats in tropical america四个新蔓生种茄属植物(dulcamaroid进化枝)在热带美洲山区的栖息地.pdfVIP

Four New Vining Species of Solanum (Dulcamaroid Clade) from Montane Habitats in Tropical America Sandra Knapp* Department of Botany, The Natural History Museum, London, United Kingdom Abstract Background: Solanum (Solanaceae), with approximately 1500 species, is one of the largest genera of flowering plants, and has a centre of diversity in the New World tropics. The genus is divided into 13 major clades, of which two, the Dulcamaroid clade and the ‘‘African Non-Spiny’’ clade, exhibit vine morphology with twining petioles. I am currently preparing a worldwide monograph of these two groups, comprising some 70 species. Methods: I formally describe here four new species of Solanum from montane Mexico and South America all belonging to the Dulcamaroid clade (including the traditionally recognised section Jasminosolanum Bitter). Descriptions, discussions of closely related species and preliminary conservation assessments are provided for all species; all species are illustrated. This paper is also a test case for the electronic publication of new names in flowering plants. Conclusions: These new species are all relatively rare, but not currently of conservation concern. Solanum aspersum sp. nov. is distributed in Colombia and Ecuador, S. luculentum sp. nov. in Colombia and Venezuela, S. sanchez-vegae sp. nov. is endemic to northern Peru and S. sousae sp. nov. to southern Mexico. Solanum luculentum has the morphology of a dioecious species; this is the first report of this breeding system in the Dulcamaroid clade. Citation: Knapp S (2010) Four New Vining Species of Solanum (Dulcamaroid Clade) from Montane Habitats in Tropical America. PLoS ONE 5(5): e10502. doi:10.1371/journal.pone.0010502 Editor: Samuel T. Turvey, Zoological Society of London, United Kingdom Received November 3, 2009;