A new species of Guadua (Poaceae, Bambusoideae, Bambuseae) and synopsis of the genus in Argentina and neighboring regions

Abstract

A new species of Guadua from the Atlantic forest in Argentina, Guadua variegata, is described and illustrated. Guadua variegata is compared to other taxa distributed in Argentina, Bolivia, Paraguay, Uruguay, and southern Brazil in a key and a table based on exomorphological characters. Additional micromorphological characters of foliage leaf blades and cauline epidermis of G. variegata are included. Lectotypes of G. paniculata and G. tessmannii are here designated.Se describe e ilustra Guadua variegata, una nueva especie propia de la selva misionera de la Argentina. Guadua variegata es comparada con los taxones distribuidos en la Argentina, Bolivia, Paraguay, Uruguay y Sur de Brasil, en una clave y una tabla basadas en caractères exomorfológicos. Se incluyen estudios micromorfológicos de la epidermis caulinar y foliar de G. variegata. Se lectotipifica aquî a G. paniculata y G. tessmannii.