Novedades en la Distribución de las Cyatheaceae (Pteridophyta) en Argentina

cyathea atrovirens (langsd. & fisch.) domin is reported for the first time for corrientes province (argentina). thus, its area of distribution is extended southwest. the presence of alsophila odonelliana (alston) m. lehnert is confirmed for jujuy province (argentina). in this study the spore features were diagnostic in order to determine these taxa.