Vascular plants of oxbow lakes of Turvo River, Upper Paraná River basin, São Paulo State, Brazil

Vascular plants were investigated in oxbow lakes of Turvo River, Upper Paraná River basin, between Icémand Nova Granada municipalities, state of São Paulo, Brazil. In this region, six lagoons were sampled: Ganzella, Mustafá,Braço Morto, 45, Federal, and Parente. The survey showed a total of 54 species, 36 genera and 22 families. The speciesrichest families were Poaceae, Cyperaceae, and Polygonaceae. Eichhornia crassipes (Pontederiaceae) was the single speciesencountered in all the six lakes