First record of Pithophora oedogonia (Montagne) Wittrock (Pithophoraceae) in the Upper Paraná River floodplain, Brazil

Abstract

Pithophora is the only genus recorded of the Pithophoraceae family in Brazil. Pithophora specimens were found close to banks of Hydrilla verticillata (L.F.) Royle in the Upper Paraná River floodplain. The specimens showed intercalary akinetes isospores in the same individual and morphologic similarities with Pithophora oedogonia reported in previous studies. This species constitutes a new citation for the Upper Paraná River floodplain and the third report for Brazil.