A tribo Vernonieae Cass. (Asteraceae) na Serra Dourada, Goiás, Brasil
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2013-10-20
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Universidade Federal de Goiás
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The tribe Vernonieae Cass. (Asteraceae) Serra Dourada, Goiás, Brazil. The tribe Vernonieae belongs to Cichorioideae, has 21 subtribes, 119 genera and approximately 1000 species, having a pantropical distribution. For Brazil are cited 55 genera and 437 species. In Goiás state are recorded 19 genera and 129 species. The aim of this study is to present the taxonomic treatment of the species of the tribe Vernonieae from Serra Dourada, Goiás. The collections were made between September 2011 and December 2012, and all material was depositated in UFG herbarium. The species were described based on all material examined (own collections and collections from the herbaria RB, UB and UFG). It is presented an identification key for the taxa found in the study area, as well as descriptions, followed by taxonomical comments, such as morphological variability and affinity between the taxa, comments on geographic distribution and phenology, as well as illustrations. Were found 30 species grouped in 13 genera and seven subtribes. The most representative genus was Lessingianthus H. Rob. (11 spp.), followed by Chresta Vell. ex DC. and H. Vernonanthura Rob. (3 spp. each), all together representing about 57% of the total, other four genera (Chrysolaena H. Rob., Elephantopus L., Eremanthus Less. and Lepidaploa (Cass.) Cass.) are represented by two species each, and six other genera (Centratherum Cass., Echinocoryne H. Rob., Lychnophora Mart., Piptocarpha R. Br, Stenocephalum Sch.Bip. and Strophopappus DC.) with one species each. From the total species number, 76% are represented by shrub or subshrub layer, 17% herbaceous and 7% woody. Some species found in the study area have restricted geographical distribution as Chresta curumbensis (Philipson) H. Rob. (Goiás and Mato Grosso), C. speciosa Gardner (Goiás and Tocantins), Lessingianthus hoveaefolius (Gardner) H. Rob. (Goiás and Minas Gerais) and L. soderstroemii (H. Rob.) H. Rob. (Distrito Federal and Goiás). Lessingianthus rigescens (Malme) Dematt. is a new record for Goiás state, this species was initially reporterd for Mato Grosso. The study it is the first taxonomic treatment of tribe Vernonieae to some locality in the Goiás state.
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Moreira, Giselle Lopes. A tribo Vernonieae Cass. (Asteraceae) na Serra Dourada, Goiás, Brasil. 2013. 92 f. Dissertação (Mestrado em Biodiversidade Vegetal) - Universidade Federal de Goiás, Goiânia, 2013