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Adscription of Parafestuca albida (Lowe) E. B. Alexeev to Koeleria Pers.

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Abstract:

A new name, Koeleria loweana Quintanar, Catalán & Castrov. nom. nov., is provided for Parafestuca albida (Lowe) E. B. Alexeev, the single species of the endemic Madeiran genus created by Alexeev to accomodate Festuca albida Lowe. A lectotype is selected and a first chromosome number of 2n = ca. 175 is reported for this taxon. Careful re-examination of morphological characters and new chromosome data support the inclusion of this relict Macaronesian lineage within the diploid-to-highly-polyploid complex genus Koeleria Pers. Phylogenetic analyses based on both nuclear ribosomal ITS and chloroplast trnT-F sequences further indicate that Parafestuca is neither related to Festuca nor to the festucoids (Loliinae, Poeae), but a member of a strong Koeleriinae core clade (Aveneae).

Keywords: KOELERIA; MADEIRA ISLAND; MADEIRAN ENDEMICS; MOLECULAR PHYLOGENETICS; MORPHOLOGY; PARAFESTUCA

Document Type: Research Article

Affiliations: 1: Real Jardín Botánico de Madrid CSIC, Claudio Moyano 1, 28014 Madrid, Spain 2: Universidad de Zaragoza, Escuela Politécnica Superior de Huesca, Ctra. Cuarte s.n., 22071 Huesca, Spain

Publication date: August 1, 2006

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