The genus Eleocharis R. Br. (Cyperaceae) in Rio Grande do Sul, Brazil

Abstract

The taxonomic study of genus Eleocharis R. Br. for Rio Grande do Sul State was developed through of traditional methods of comparative morphology in taxonomy. The data were obtained through bibliography, revision of regional herbaria and field expedition for specimens collection. The genus is represented in Rio Grande do Sul by 27 species: Eleocharis acutangula (Roxb.) Schult., E. bonariensis Nees, E. contracta Maury, E. dunensis Kük., E. elegans (Kunth) Roem. & Schult., E. filiculmis Kunth, E. flavescens (Poir.) Urb., E. geniculata (L.) Roem. & Schult., E. interstincta (Vahl) Roem. & Schult., E. laeviglumis R. Trevis. & Boldrini, E. loefgreniana Boeck., E. maculosa (Vahl) Roem. & Schult., E. minima Kunth var. minima, E. montana (Kunth) Roem. & Schult., E. montevidensis Kunth, E. nudipes (Kunth) Palla, E. obtusetrigona (Lindl. & Nees) Steud., E. parodii Barros, E. quinquangularis Boeck., E. rabenii Boeck., E. radicans (Poir.) Kunth, E. sellowiana Kunth, E. squamigera Svenson, E. subarticulata (Nees) Boeck., E. viridans Kük. ex Osten, Eleocharis sp.1 and Eleocharis sp.2. Descriptions, illustrations and an analytical key for species are provided, as well as data about their geographic distribution, habitat and flowering/fruiting periods.