%0 Journal Article %T Nota sobre a presen a de uma esp¨¦cie advent¨ªcia de Senecio (Asteraceae) no Rio Grande do Sul, Brasil %A Nelson Ivo Matzenbacher %A Angelo Alberto Schneider %J Revista Brasileira de Bioci¨ºncias %D 2008 %I Univerisade Federal do Rio Grande do Sul %X Senecio madagascariensis Poir. is reported for the first time as an adventitious species in the process of getting naturalized in the Rio Grande do Sul state, Brazil. Description, illustrations and observations about this species are presented. %K Asteraceae %K Senecio %K adventitious species %K flora of Rio Grande do Sul %U http://www.ufrgs.br/seerbio/ojs/index.php/rbb/article/view/917