ABSTRACT:

A new hairy species of Xanthosoma (X. pottii) with pedate leaves and linear leaflets from Southwestern Brazil (Pantanal region) is described and compared to its closest relative, X. plowmanii Bogner. It is the only helophytic species of the genus so far recorded with compound leaves and linear leaflets, although such features seem to be somewhat common in other species of Araceae inhabiting open marshy habitats in Brazil.