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- W2166697801 endingPage "1144" @default.
- W2166697801 startingPage "1128" @default.
- W2166697801 abstract "•The circumboreal Carex section Glareosae comprises 20-25 currently accepted species. High variability in geographic distribution, ecology, cytogenetics, and morphology has led to historical problems both in species delimitation and in circumscribing the limits of the section, which is one of the major tasks facing caricologists today.•We performed phylogenetic reconstructions based on ETS, ITS, G3PDH, and matK DNA sequences from 204 samples. Concatenation of gene regions in a supermatrix approach to phylogenetic reconstruction was compared to coalescent-based species-tree estimation. Ancestral state reconstructions were performed for eight morphological characters to evaluate correspondence between phylogeny and traits used in traditional classification within the section.•The results confirm the existence of a core Glareosae comprising 23-25 species. Most species constitute exclusive lineages, and relationships among species are highly resolved with both the supermatrix and coalescent-based species-tree approaches. We used ancestral state reconstruction to investigate sources of homoplasy underlying traditional taxonomy and species circumscription. We found that even species apparently not constituting exclusive lineages are morphologically homogeneous, raising the question of whether paraphyly of species is a phylogenetic artifact in our study or evidence of widespread homoplasy in characters used to define species.•This study demonstrates the monophyly of Carex section Glareosae and establishes a phylogenetic framework for the section. Homoplasy makes many of morphological characters difficult to apply for taxon delimitation. The strong concordance between supermatrix and species-tree approaches to phylogenetic reconstructions suggests that even in the face of incongruence among molecular markers, section-level or species-level phylogenies in Carex are tractable." @default.
- W2166697801 created "2016-06-24" @default.
- W2166697801 creator A5009079204 @default.
- W2166697801 creator A5033020224 @default.
- W2166697801 creator A5075391897 @default.
- W2166697801 creator A5084369149 @default.
- W2166697801 creator A5088082020 @default.
- W2166697801 date "2015-07-01" @default.
- W2166697801 modified "2023-10-09" @default.
- W2166697801 title "Phylogeny, systematics, and trait evolution of Carex section Glareosae" @default.
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