The genus Carex L. (Cyperaceae) in Rio Grande do Sul, Brazil

Abstract

The genus Carex L. includes about 2200 species mainly distributed in cold and temperate regions. A survey of the genus Carex in Rio Grande do Sul was carried out based on field collections, revision of herbaria and literature. The following taxa were confirmed to the State: C. aureolensis Steud., C. bonariensis Desf., C. brasiliensis A. St.-Hil., C. brongniartii Kunth, C. chilensis Brongn., C. feddeana H. Pfeiff., C. fuscula D’Urv. subsp. catharinensis (Boeck.) Luceño & Alves, C. longii subsp. meridionalis (Kük.) Luceño & M. Alves, C. phalaroides subsp.. crassiflora (Kük.) Luceño & M. Alves, C. phalaroides subsp. moesta (Kunth) Luceño & M. Alves, C. phalaroides subsp. paraguayensis (Maury) Luceño & M. Alves, C. phalaroides Kunth subsp. phalaroides, C. polysticha Boeck., C. purpureovaginata Boeck., C. sellowiana Schltdl., C. seticulmis Boeck., C. sororia Kunth, C. tweediana Nees ex Hooker, C. uruguensis Boeck. and C. vixdentata (Kük.) G.A. Wheeler. An analytical key to the identification of the confirmed taxa is provided as well as descriptions, illustrations and data on geographical distribution and habitat.