Flora do Rio de Janeiro: Pontederiaceae

Abstract

This study focuses on the Pontederiaceae found in the state of Rio de Janeiro. It is based on a morphological analysis of herbaria collections, as well as on a review of the relevant literature and on collections in the field. A total of three genera and five species were recorded for the state: Eichhornia azurea, Eichhornia crassipes, Heteranthera reniformis, Pontederia cordata and Pontederia sagittata. An identification key, descriptions, habitat data, phenology, and species distribution are also provided.