Carex flava agg. (section Ceratocystis, Cyperaceae) in Poland: taxonomy, morphological variation, and soil conditions

@article{Wicaw2014CarexFA,
  title={Carex flava agg. (section Ceratocystis, Cyperaceae) in Poland: taxonomy, morphological variation, and soil conditions},
  author={Helena Więcław},
  journal={Biodiversity Research and Conservation},
  year={2014},
  volume={33},
  pages={3 - 51}
}
  • H. Więcław
  • Published 1 March 2014
  • Environmental Science
  • Biodiversity Research and Conservation
Abstract Sedges of Carex flava agg., typical of moist or wet habitats, are difficult to classify because of a lack of clear-cut morphological differences between them and the existence of numerous hybrids. This monograph presents results of research conducted in 2007-2012 in various parts of Poland. The plant material consisted of 1852 living specimens of Carex flava agg., collected from 80 localities, and dried specimens from 26 herbaria and from 7 private collections. The analysis involved 45… 
Carex flava agg. (section Ceratocystis, Cyperaceae) in Poland: distribution maps and locality lists
TLDR
List of localities and distribution maps of Carex taxa of the section Ceratocystis in Poland using material deposited in Polish herbaria and private collections as well as material collected during field research in 2007-2012 indicate that C. viridula is frequent in Poland, whereas C. hostiana is the rarest one.
Morphological variability and genetic diversity in Carex buxbaumii and Carex hartmaniorum (Cyperaceae) populations
TLDR
A considerable genetic affinity between the two sedge species is indicated and the taxonomic status of the putative infraspecific taxa within C. buxbaumii requires further studies throughout the distribution range, addressing habitats, morphology and genetics.
Diversity of plant communities with Carex flava agg. in Poland and their relationship with soil properties
TLDR
The largest differences, both in terms of species composition and in soil conditions, were revealed between communities with C. lepidocarpa and C. demissa.
Within-species variation among populations of the Carex flava complex as a function of habitat conditions
TLDR
Phenotypic variability in the species of the C. flava complex is related to habitat conditions and this can lead to the differentiation of morphotypes within species, as well as to habitat fertility, elevation and habitat disturbance.
Variability of the inflorescence morphology of Carex spicata (Cyperaceae) and its implication to taxonomy
TLDR
The limited diagnostic value of inflorescence crowding, especially in vegetative or early fruiting phases, suggests that the taxonomic importance of this character should be reconsidered.
Cut from the same cloth: The convergent evolution of dwarf morphotypes of the Carex flava group (Cyperaceae) in Circum-Mediterranean mountains
TLDR
The results suggest that dwarf mountain morphotypes within the Carex flava species complex are small forms of different lineages that have recurrently adapted to mountain habitats through convergent evolution.
Despite admixing two closely related Carex species differ in their regional morphological differentiation
TLDR
The results suggest that within-region genetic admixing between species has limited potential to lead to region-specific similarity between species, at least in the model system of the C. flava complex.
Combining population genomics and ecological niche modeling to assess taxon limits between Carex jemtlandica and C. lepidocarpa
TLDR
The genomic results reveal two genetic clusters, largely corresponding to C. jemtlandica and C. lepidocarpa that also remain distinct in sympatry, despite clear indications of ongoing hybridization and introgression, and suggest that they occupy different environmental niches.
Distribution, ecology and morphology of three Ceratocystis hybrids in the Province of Fryslân, the Netherlands (Carex, Cyperaceae)
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Genetic differentiation, phenotypic plasticity and adaptation in a hybridizing pair of a more common and a less common Carex species
TLDR
Plasticity, genetic variation and genotype–environment interactions all contributed to regional differentiation of the closely related species, and the less common species showed slightly more genetic differentiation between populations and more maladapted traits than the more common one.
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References

SHOWING 1-10 OF 137 REFERENCES
Taxonomy of the Carex flava complex (Cyperaceae) in Finland
TLDR
The morphological variation in the Carex flava complex in Finland, particularly taxa described by Alvar Palmgren as endemic to northern Europe, was studied using numerical analyses to maximize the separation of the taxa.
Taxonomy of the Carex flava complex (Cyperaceae) in North America and northern Eurasia. I: Numerical taxonomy and character analysis
The patterns of variation in morphological characters of the North American and northern Eurasian members of the Carex flava group (section Ceratocystis) have been examined using principal components
Morphological Differences between Natural Populations of Carex viridula (Cyperaceae): Effects of Soil Conditions
TLDR
A general pattern in the C. viridula morphology was found: habitats with soils of high contents of carbonates and exchangeable elements, and with pH exceeding 7.0, supported specimens usually having three or two female spikes spaced widely apart, and long, usually peduncled, male spikes.
Natural Hybridization within the Carex flava Complex (Cyperaceae) in Poland: Morphometric Studies
TLDR
The morphological characters most useful in distinguishing between hybrids and their parental species in the C. flava aggregate are the size of the utricle and the beak as well as characters transgressive in the hybrids, associated with inflorescence length, location of female spikes, and length of male utricles and their peduncles.
Systematics and Taxonomy of Carex sect. Ceratocystis (Cyperaceae) in Europe: A Molecular and Cytogenetic Approach
TLDR
Three major clades were found which mostly match morphological features of the utricle of Carex sect.
Variability of perigynium morphology of Central European members of Carex sect. Phaestoglochin (Cyperaceae) from variable plant communities
TLDR
Analysis of the differentiation of perigynium features among the taxa studied against the background of the plant communities where the plants were grown indicated a distinct effect of the habitat conditions on the morphological features ofperigynia.
Status of Carex bergrothii (Cyperaceae) on Gotland, SE Sweden
TLDR
It is concluded that C. bergrothii cannot be recognised as a separate species of Carex oederi on Gotland and this ecotype is apparently adapted to grow in deep water on calcareous clay among loose stands of Cladium mariscus.
Patterns of allozyme and morphological differentiation in the Carex flava complex (Cyperaceae) in Fennoscandia
TLDR
Allozyme and morphological differentiation patterns within the Carex flava complex in Fennoscandia were described by means of multivariate analyses and it was indicated that C demissa may be more closely related to C lepidocarpa than to C oederi.
Numerical analysis of morphology of natural hybrids between Carex hostiana and the members of Carex flava agg. (Cyperaceae)
TLDR
The least variable traits, namelyBeak length, utricle length, ratio of beak length to the overall utrics, female spike width, and width of the lowest bract, proved to be the most useful in delimiting the hybrids.
Genetic Differentiation of Carex flava and Carex viridula in West Europe (Cyperaceae)
TLDR
Electrophoretic data assessing variation within the Carex flava complex is presented and the systematic relationship of the two widely recognized species C. flava and C. viridula is discussed to consider the distribution of infraspecific variation within these two species and briefly evaluate subspecific relationships.
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