Figura 2 - uploaded by Juan Antonio Devesa Alcaraz
Content may be subject to copyright.
Festuca frigida, a-j) Laguna de Aguas Verdes, Sierra Nevada, Granada (COFC 61410); k, l) Monte Pelado, Sierra Nevada, Granada (MA 12130): a) hábito; b) detalle del ápice de la vaina y lígula, en vista adaxial; c) detalle del ápice del limbo foliar; d) espiguilla; e) gluma inferior, en vista abaxial; f) gluma superior, en vista abaxial; g) lema, en vista abaxial; h) pálea, en vista abaxial; i) lodícula; j) verticilos sexuales; k) cariopsis en vista adaxial; l) cariopsis en vista abaxial.
Source publication
Español. Se ha efectuado la revisión taxonómica del complejo Festuca alpina en la Península Ibérica. Se reconocen 3 especies para el territorio: Festuca alpina, F. glacialis y F. frigida. Se aporta una clave para la identificación de los taxones, así como su descripción morfológica, anatomía foliar, distribución geográfica, apetencias ecológicas, f...
Similar publications
This article provides information on the leaf anatomy of the indau plant. In Uzbekistan, the introduction of plants is a pressing issue. That is why we are experimenting with inddau introduction. This is because studying the leaf anatomy of indau helps to introduce it
In order to explore whether leaf area of developing leaves was regulated by systemic irradiance signal from mature leaves, we investigated the leaf area, leaf anatomy, photosynthesis, auxin, gibberellin, and cytokinin contents of new developing leaves in soybean growing under conditions of shaded mature leaves (MS), shaded whole plants (WS), and un...
A study of the leaf anatomy in the species of the genus Festuca present in the Iberian Peninsula was made. A total of 68 taxa were included and 15 characters were measured in leaf cross-section. The major anatomical features of each taxonomic group were characterized, and some variability was observed in the taxa. The anatomical patterns observed w...
Second-generation biofuel crop miscanthus is one of the most promising plants tested for phytomanagement of contaminated sites. In this preliminary pot case study, the most used hybrid Miscanthus x giganteus was cultivated in three different real contaminated soils: agricultural soil contaminated with Cd; post-military soil slightly contaminated wi...
Citations
... The number of vascular bundles is 3-5 and the sclerenchyma strands are quite thin. The species of this group are also characterized by their small size, flexible leaves, and short panicles with few spikelets (López et al. 2016 (Foggi et al. 2012, Martínez-Sagarra et al. 2017. In recent years, it has been seen that the species with the morphological and anatomical features mentioned above are grouped under the "F. ...
A new species of Festuca from the Western Taurus Mountains (Antalya, Turkey) is described here and named F. albomontana. The new species can clearly be distinguished from the other species included in the F. alpina group by its leaf anatomical features. It has a geographically isolated position in the Western Tauruses whereas a closely related species, F. sommieri , is very local in the Black Sea Region of Turkey. It is suggested that it should be in the “critically endangered” threat category according to the International Union for Conservation of Nature (IUCN) criteria. Observations on the ecology of the population are noted.
... In this context, genome duplications could have constituted a success mechanism of adaptation and range expansion, along with speciation, in changing climatic conditions [8,[60][61][62]. Phylogenetic analyses based on nuclear and chloroplast markers have detected polytomies or weakly supported relationships among Festuca yvesii subspecies [63]. This unresolved phylogeny may be substantially influenced by the intricate history of past and recent hybridisation and polyploidisation [56]. ...
Polyploidy has played an important evolutionary role in the genus Festuca (Poaceae), and several ploidy levels (ranging from 2n = 2x = 14 to 2n = 12x = 84) have been detected to date. This study aimed to estimate the genome size and ploidy level of two subspecies belonging to the F. yvesii polyploid complex by flow cytometry and chromosome counting. The phenotypic variation of the cytotypes was also explored, based on herbarium material. The genome size of F. yvesii subsp. lagascae has been estimated for the first time. Nuclear 2C DNA content of F. yvesii subsp. summilusitana ranged from 21.44 to 31.91 pg, while that of F. yvesii subsp. lagascae was from 13.60 to 22.31 pg. We report the highest ploidy level detected for Festuca (2n = 14x = 98) and previously unknown cytotypes. A positive correlation between holoploid genome size and chromosome number counts shown herein was confirmed. The morphometric approach showed a slight trend towards an increase in the size of some organs consistent with the variation in the ploidy level. Differences in characters were usually significant only among the most extreme cytotypes of each subspecies, but, even in this case, the high overlapping ranges prevent their distinction.
... Festuca (about 30 species in the Iberian Peninsula), excluding the species of the F. marginata (Hackel 1882: 108) richter (1890: 96) and F. alpina Suter (1802: 55) groups, in which the sclerenchyma is arranged in strands on the leaf abaxial surface, the remaining species show a continuous layer -sometimes broken-of sclerenchyma in the leaf crosssection (Foggi et al. 2012, lópez et al. 2016. the leaf sheaths are usually open with overlapping margins towards the distal end in most species that have a continuous layer of sclerenchyma, like in the F. indigesta Boissier (1838: 91) group and closely related taxa (Fig. 1a). ...
Festuca devesae (Poaceae), a new species from the low mountains of northern Iberian Peninsula (Burgos and Álava provinces, Spain), is described. According to its morphology, it belongs to Festuca subsect. Festuca, the most diverse group within the genus. The new species differs from other known consectional taxa by having a continuous layer of abaxial subepidermal sclerenchyma in the leaf cross-sections, and by the leaf sheaths closed to the mouth. Both traits are found together only in F. segimonensis and F. hystrix, from which F. devesae clearly differs in the leaf apex shape, the size of the auricles, and the leaf anatomy in cross-section, among other traits. A detailed morphometric description, photographs, and data on leaf anatomy, phenology, ecology, and distribution are given. A comparison with morphologically similar species and an identification key are also provided.
... ovina complex", which in turn includes groups of species with greater or lesser taxonomic difficulty (cf. Cebolla and Rivas Ponce 1999;Foggi et al. 2006;Pyke 2013;López et al. 2016). As in most species of the sect. ...
... frigida) of the Iberian Peninsula. They are characterized by their small size, flexible leaves, and short panicles with few spikelets (López et al. 2016). The three species are phylogenetically very close (Catalán et al. 2007), and appear grouped within the lineage 1 (Festuca subsect. ...
A study of the leaf anatomy in the species of the genus Festuca present in the Iberian Peninsula was made. A total of 68 taxa were included and 15 characters were measured in leaf cross-section. The major anatomical features of each taxonomic group were characterized, and some variability was observed in the taxa. The anatomical patterns observed were compared and discussed with the relationships suggested by the molecular analyses. The leaf outline, the presence or absence of complete girders, and the development degree of the bulliform cells were the main characters to differentiate among fescue species of the fine-leaved clade and those of the broad-leaved clade. The most useful character to segregate species groups within the different taxonomic sections was the arrangement of the sclerenchyma, and a remarkable variability of this character was found in the species of Festuca section Festuca, especially in those located in other lineages according to molecular markers. Most of the anatomical patterns were not exclusive of the sections or lineages, and only some taxa could be anatomically differentiated at species level based on a set of non-taxative characters. The discordant pattern observed in F. henriquesii, a species traditionally included in Festuca sect. Festuca that shared anatomical features with the species of "F. rubra complex", suggests its possible inclusion in the sect. Aulaxyper pending further taxonomic and phylogenetic analyses.
A taxonomic revision of the species of the Festuca marginata group on the Iberian Peninsula is presented. Traditionally, this group has included several taxa of Festuca sect. Festuca characterized mainly by having three strands of sclerenchyma in the leaf blade and whose delimitation is difficult. To clarify taxonomy of this group, a morphological, anatomical, chorological and ecological study was performed on 246 specimens from herbaria and wild populations, and 21 morphological and anatomical characters were studied biometrically in 72 specimens from 65 different locations. A new taxonomic treatment of the group is derived from the results of the analyses. Festuca marginata, a species distributed over the east and northeast of the territory, is recognized with two subspecies: subsp. marginata, which is widely distributed in France but has a restricted distribution in the Pyrenean area, and subsp. andres-molinae, endemic in the east and northeast of the Iberian Peninsula. Festuca lambinonii, widely distributed in the mountains of the centre, east and northeast of the territory, is also recognized. An identification key, descriptions, synonyms, distribution, phenology, and ecology data are provided for the three taxa recognized.
