Resumo

GUTIERREZ, Hugo F  e  MORRONE, Osvaldo. Novedades nomenclaturales en Cenchrus s.l. (Poaceae: Panicoideae: Paniceae). Bol. Soc. Argent. Bot. [online]. 2012, vol.47, n.1-2, pp.263-269. ISSN 1851-2372.

Nomenclatural novelties in Cenchrus s.l. (Poaceae: Panicoideae: Paniceae). Recent phylogenetic studies with morphological and molecular data provided evidence on the monophyly of the genera Cenchrus, Pennisetum and Odontelytrum. Therefore, these studies propose the unification and transfer of species of Pennisetum and Odontelytrum to the genus Cenchrus, which has priority. Nomenclatural problems were detected when conducting a preliminary taxonomic revision of the genus Cenchrus s.l. from America (Gutiérrez, in preparation). To resolve these inconveniences, nine lectotypifications: Cenchrus bambusoides Caro & E.A. Sánchez, C. brevisetus E. Fourn., C. pennisetiformis Hochst. & Steud. var. intermedia Chiov., C. roseus E. Fourn., Gymnotrix mexicana E. Fourn., Hymenachne montana Griseb., Pennisetum amoenum Hochst. ex A. Rich., P. cenchroides Rich. var. hamphilahense Terracc., P. ciliare (L.) Link var. anachoreticum Chiov., P. petraeum Steud., P. pringlei Leeke, P. tristachyum (Kunth) Spreng. subsp. boliviense Chase and a new name for Gymnotrix crinita Kunth are here proposed.

Palavras-chave : Cenchrus; Pennisetum; Poaceae; Paniceae; Taxonomy.

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