Festuca dertosensis (Poaceae), an overlooked fescue from the NE Iberian Peninsula

Samuel Pyke ^[2] ; Llorenç Sáez ^[3] ; Julià Molero ^[1] ; Teresa Garnatje ^[4]
1. [1] Universitat de Barcelona
  
  Universitat de Barcelona
  
  Barcelona, España
2. [2] Jardí Botànic de Barcelona, Consorci de Museus de Ciències Naturals, Spain
3. [3] Societat d'Història Natural de les Illes Balears (SHNB), Spain
4. [4] Institut Botànic de Barcelona (IBB-CSIC-ICUB), Spain
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Localización: Willdenowia: Annals of the Botanic Garden and Botanical Museum Berlin-Dahlem, ISSN 0511-9618, ISSN-e 1868-6397, Vol. 46, Nº. 3, 2016, págs. 367-377
Idioma: inglés
Enlaces
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Resumen
- A new species of Festuca L. (Poaceae) is described from the southern mountains of Tarragona (Catalonia, Spain). The new taxon belongs to the F. rubra aggregate, and superficially resembles plants of the F. trichophylla group. Its leaf anatomy, however, suggests a closer relationship with F. rubra and, in particular, F. heterophylla. Although sharing some features with F. paucispicula, a sympatric taxon, there are sufficient differences to warrant its separation from this local endemic. A comparative table and key are provided to assist in the identification of this overlooked fescue, and its relationship to other species present in the area is discussed, with special attention paid to species sharing a similar distribution. Mitosis studies have been carried out to determine the chromosome number, and the results suggest a decaploid, with a chromosome number of 2n = c. 70.