%0 Journal Article %T Poa Annua L. y Polypogon Elongatus Kunth (Poaceae), Dos nuevas especies ex¨®ticas para la flora de la Guayana venezolana %A Chitty %A Francisco Delascio %A Nozawa %A Shingo %J Acta Bot¨¢nica Venezuelica %D 2010 %I Fundaci¨®n Instituto Bot¨¢nico de Venezuela Dr. Tob¨ªas Lasser %X poa annua and polypogon elongatus (poaceae) are described as two new additions to the flora of the venezuelan guayana. these taxa are exotic to the bioregion, so they could represent a possible threat to the local biodiversity as invasive species. actions for population management are proposed. %K exotic species %K poaceae %K tepuy %K venezuela. %U http://www.scielo.org.ve/scielo.php?script=sci_abstract&pid=S0084-59062010000200010&lng=en&nrm=iso&tlng=en