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  • 1
    Online Resource
    Online Resource
    A new classification of Cyperaceae (Poales) supported by phylogenomic data
    Wiley ; 2021
    In:  Journal of Systematics and Evolution Vol. 59, No. 4 ( 2021-07), p. 852-895
    Details
    In: Journal of Systematics and Evolution, Wiley, Vol. 59, No. 4 ( 2021-07), p. 852-895
    Abstract: Cyperaceae (sedges) are the third largest monocot family and are of considerable economic and ecological importance. Sedges represent an ideal model family to study evolutionary biology due to their species richness, global distribution, large discrepancies in lineage diversity, broad range of ecological preferences, and adaptations including multiple origins of C 4 photosynthesis and holocentric chromosomes. Goetghebeur′s seminal work on Cyperaceae published in 1998 provided the most recent complete classification at tribal and generic level, based on a morphological study of Cyperaceae inflorescence, spikelet, flower, and embryo characters, plus anatomical and other information. Since then, several family‐level molecular phylogenetic studies using Sanger sequence data have been published. Here, more than 20 years after the last comprehensive classification of the family, we present the first family‐wide phylogenomic study of Cyperaceae based on targeted sequencing using the Angiosperms353 probe kit sampling 311 accessions. In addition, 62 accessions available from GenBank were mined for overlapping reads and included in the phylogenomic analyses. Informed by this backbone phylogeny, a new classification for the family at the tribal, subtribal, and generic levels is proposed. The majority of previously recognized suprageneric groups are supported, and for the first time, we establish support for tribe Cryptangieae as a clade including the genus Koyamaea . We provide a taxonomic treatment including identification keys and diagnoses for the 2 subfamilies, 24 tribes, and 10 subtribes, and basic information on the 95 genera. The classification includes five new subtribes in tribe Schoeneae: Anthelepidinae, Caustiinae, Gymnoschoeninae, Lepidospermatinae, and Oreobolinae.
    Type of Medium: Online Resource
    ISSN: 1674-4918 , 1759-6831
    URL: Issue
    URL: Article
    DOI: 10.1111/jse.v59.4
    DOI: 10.1111/jse.12757
    Language: English
    Publisher: Wiley
    Publication Date: 2021
    detail.hit.zdb_id: 2516638-4
    SSG: 6,25
    SSG: 12
    Location Call Number Limitation Availability
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    Online Resource
  • 2
    Online Resource
    Online Resource
    Global dispersal and diversification of the genus Schoenus (Cyperaceae) from the Western Australian biodiversity hotspot
    Wiley ; 2021
    In:  Journal of Systematics and Evolution Vol. 59, No. 4 ( 2021-07), p. 791-808
    Details
    In: Journal of Systematics and Evolution, Wiley, Vol. 59, No. 4 ( 2021-07), p. 791-808
    Abstract: The predominantly austral genus Schoenus L. is the largest genus in tribe Schoeneae and one of the ten most species‐rich Cyperaceae genera, with over 150 accepted species found mostly in Australia, New Zealand, southeast Asia, and southern Africa. Here, we use data based on two nuclear and three plastid DNA regions to present one of the most comprehensive phylogenetic reconstructions of a genus in Cyperaceae to date, covering over 70% of described species of Schoenus . After recent taxonomic realignments in the last 4 years have both added and removed species from the genus, we show that Schoenus is now monophyletic. In addition, our results indicate that Schoenus originated in Western Australia in the Paleocene and eventually dispersed to surrounding continents, but rarely back. The diversification rate of the genus appears to have slightly decreased over time, and there has not been an increase associated with the establishment of the Cape clade endemic to the sclerophyllous fynbos vegetation type, such as has been reported in other plant lineages endemic to the Cape region. These results will serve as a template to understanding the complex patterns of genome size evolution and to untangle drivers of diversification in this genus.
    Type of Medium: Online Resource
    ISSN: 1674-4918 , 1759-6831
    URL: Issue
    URL: Article
    DOI: 10.1111/jse.v59.4
    DOI: 10.1111/jse.12742
    Language: English
    Publisher: Wiley
    Publication Date: 2021
    detail.hit.zdb_id: 2516638-4
    SSG: 6,25
    SSG: 12
    Location Call Number Limitation Availability
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    Online Resource
  • 3
    Online Resource
    Online Resource
    A framework infrageneric classification of Carex (Cyperaceae) and its organizing principles
    Wiley ; 2021
    In:  Journal of Systematics and Evolution Vol. 59, No. 4 ( 2021-07), p. 726-762
    Details
    In: Journal of Systematics and Evolution, Wiley, Vol. 59, No. 4 ( 2021-07), p. 726-762
    Abstract: Phylogenetic studies of Carex L. (Cyperaceae) have consistently demonstrated that most subgenera and sections are para‐ or polyphyletic. Yet, taxonomists continue to use subgenera and sections in Carex classification. Why? The Global Carex Group (GCG) here takes the position that the historical and continued use of subgenera and sections serves to (i) organize our understanding of lineages in Carex , (ii) create an identification mechanism to break the ~2000 species of Carex into manageable groups and stimulate its study, and (iii) provide a framework to recognize morphologically diagnosable lineages within Carex . Unfortunately, the current understanding of phylogenetic relationships in Carex is not yet sufficient for a global reclassification of the genus within a Linnean infrageneric (sectional) framework. Rather than leaving Carex classification in its current state, which is misleading and confusing, we here take the intermediate steps of implementing the recently revised subgeneric classification and using a combination of informally named clades and formally named sections to reflect the current state of our knowledge. This hybrid classification framework is presented in an order corresponding to a linear arrangement of the clades on a ladderized phylogeny, largely based on the recent phylogenies published by the GCG. It organizes Carex into six subgenera, which are, in turn, subdivided into 62 formally named Linnean sections plus 49 informal groups. This framework will serve as a roadmap for research on Carex phylogeny, enabling further development of a complete reclassification by presenting relevant morphological and geographical information on clades where possible and standardizing the use of formal sectional names.
    Type of Medium: Online Resource
    ISSN: 1674-4918 , 1759-6831
    URL: Issue
    URL: Article
    DOI: 10.1111/jse.v59.4
    DOI: 10.1111/jse.12722
    Language: English
    Publisher: Wiley
    Publication Date: 2021
    detail.hit.zdb_id: 2516638-4
    SSG: 6,25
    SSG: 12
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
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