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

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).

Phylogeny of the tribe Aveneae (Pooideae, Poaceae) inferred from plastid trnT‐F and nuclear ITS sequences

“…1 and 2). Parafestuca was included in Koeleria, not only because of its placement here, but also because its morphology is typical of the genus Koeleria (Soreng et al, 2003;Quintanar et al, 2006). This mostly perennial lineage also included the Trisetum ovatum group, that comprised the annual T. loeflingianum, T. ovatum, and the small genus Gaudinia, with either strongly contracted panicles (Trisetum representatives) or racemes of spikelets (Gaudinia).…”

Phylogenetic structure of the grass subfamily Pooideae based on comparison of plastid matK gene–3′trnK exon and nuclear ITS sequences

“…1-3) is in agreement with previous molecular studies (Soreng & al., 1990;Davis & Soreng, 1993;Nadot & al., 1994;Clark & al., 1995;Hsiao & al., 1995aDuvall & Morton, 1996;Catalán & al., 1997;Soreng & Davis, 1998Hilu & al., Fig. 5. Microscopic details from the spikelets of Boissiera squarrosa (a-c) and Bromus erectus (d-f) 1999; Mathews & al., 2000;GPWG, 2001;Hunter & al., 2004;Fernández Souto & al., 2006;Quintanar & al., 2006Quintanar & al., , 2007Soreng & al., 2007;Bouchenak-Khelladi & al., 2008). Both plastid (Fig.…”

“…KEYWORDS: Aveneae, grasses, Poaceae, Poeae, Pooideae, ITS, matK gene-3′trnK exon, systematics Compared with information from the chloroplast genome, data from nuclear genomic regions of Pooideae are limited and mainly restricted to the tribes Triticeae and Poeae/Aveneae (e.g., Baum & Appels, 1992;Hsiao & al., 1994Hsiao & al., , 1995aHsiao & al., , b, 1999Kellogg & Appels, 1995;Grebenstein & al., 1998;Mason-Gamer & al., 1998;Mathews & al., 2000;Mason-Gamer & Kellogg, 2000;Mason-Gamer, 2001Röser & al., 2001;Torrecilla & Catalan, 2002;Blattner 2004;Brysting & al., 2004;Catalán & al., 2004;Quintanar & al., 2006Quintanar & al., , 2007Chiapella, 2007).…”

Paraphyly and Endemic Genera of Oceanic Islands: Implications for Conservation1

“…A morphological reexamination and accomplished (Garcia-Jacas et al, 2001; Susanna et new chromosome data suggested inclusion of this al., 2011), but Yunquea has not been included. genus into Koeleria, and this has been further Two genera have been investigated recently and supported by nr TS and cp trnT-F sequences in this submerged into other genera based primarily on other same investigation (Quintanar et al, 2006). Within than molecular data.…”