A new species and molecular phylogeny of Brazilian succulent Euphorbia sect. Brasilienses. Issue 7 (3rd October 2018)

• Record Type: Journal Article
• Authors: Hurbath, Fernanda; Leal, BÁrbara SimÕes Santos; Da Silva, Otávio Luis Marques; Palma-Silva, Clarisse; Cordeiro, INês
• Is Part Of: Systematics and biodiversity. Volume 16:Issue 7(2018)
• Page Start: 658
• Page End: 667
• Publication Date: 2018-10-03
• Subjects: Campos rupestres -- Espinhaço Range -- Euphorbia subg. Euphorbia -- iselbergs -- rocky caatinga -- systematics; Biodiversity -- Periodicals; Biology -- Classification -- Periodicals; Natural history -- Periodicals; Biodiversity; Biology; Classification; Periodicals; 578
• DOI: 10.1080/14772000.2018.1473897
• Languages: English
• ISSNs: 1478-0933

Abstract

Abstract : A new species of Euphorbia sect. Brasilienses V.W. Steinm. & Dorsey is described. Euphorbia tetrangularis Hurbath & Cordeiro is endemic to the Serra de Montevidéu, a part of the Espinhaço Range located in the state of Minas Gerais, Brazil. It differs from other species within the section based on the following characters: 4-ribbed branches, green cyathia, and green cyathial glands with erect appendages. This new species would qualify as critically endangered (CR) according to IUCN criteria. An inferred phylogeny based on a combined dataset of nuclear (ITS1) and plastid regions ( psbA-trnH, trnC-ycf6, matK, atpI-atpH, psbJ-petA, trnQ-rps16 × 1 ) confirms the monophyly of Euphorbia sect. Brasilienses and supports the recognition of E. tetrangularis . The phylogeny also suggests that this group probably underwent a recent radiation.