Alismataceae in Ceará state, Brazil

Abstract

A floristc survey of Alismataceae latu sensu from Ceará state, Northeastern Brazil, is presented. This region is characterized by a semiarid climate where intermittent aquatic ecosystems are common. Four genera and 13 species were identified. The species are: Sagittaria guayanensis, S. planitiana, Echinodorus tenellus, E. glandulosus, E. pubescens, E. subalatus, E. palaefolius, E. floribundus, E. lanceolatus, Limnocharis laforestii, L. flava, Hydrocleys martii, H. nymphoides. Descriptions, taxonomic observations, illustrations, keys for identification of the species and data on geographic distribution are presented.