A new species and molecular phylogeny of Brazilian succulent Euphorbia sect. Brasilienses

Author(s)

Hurbath, Fernanda ^[1] ; Santos Leal, Barbara Simoes ^[2] ; Marques Da Silva, Otavio Luis ^[1] ; Palma-Silva, Clarisse ^{[2, 3]} ; Cordeiro, Ines ^[1]

Affiliation

^[1] Inst Bot, Nucleo Pesquisa Curadoria Herbario SP, Ave Miguel Stefano 3687, BR-04045972 Sao Paulo, SP - Brazil

^[2] Univ Estadual Paulista Rio Claro, Dept Ecol, Lab Ecol Mol, Ave 24A 1515, BR-13506900 Rio Claro, SP - Brazil

^[3] Univ Estadual Campinas, Dept Biol Vegetal, Cidade Univ Zeferino Vaz Barao Geraldo, BR-13083863 Campinas, SP - Brazil

• Document type: Journal article
• Source: SYSTEMATICS AND BIODIVERSITY; v. 16, n. 7, p. 658-667, 2018.
• Web of Science Citations: 1

Abstract

A new species of Euphorbia sect. Brasilienses V.W. Steinm. \& Dorsey is described. Euphorbia tetrangularis Hurbath \& Cordeiro is endemic to the Serra de Montevideu, a part of the Espinhaco 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-rps16x1) 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. (AU)

• FAPESP's process: 15/11812-1 - SYSTEMATICS, POPULATION GENETIC STRUCTURE AND PHYLOGEOGRAPHY OF EUPHORBIA SECT. BRASILIENSES V. W. STEINM. & DORSEY (EUPHORBIACEAE)
• Grantee: Inês Cordeiro
• Support type: Regular Research Grants