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Sökning: WFRF:(Tsutsumi Chie)

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  • Schuettpelz, Eric, et al. (författare)
  • A community-derived classification for extant lycophytes and ferns
  • 2016
  • Ingår i: Journal of Systematics and Evolution. - : Wiley. - 1674-4918 .- 1759-6831. ; 54:6, s. 563-603
  • Tidskriftsartikel (refereegranskat)abstract
    • Phylogeny has long informed pteridophyte classification. As our ability to infer evolutionary trees has improved, classifications aimed at recognizing natural groups have become increasingly predictive and stable. Here, we provide a modern, comprehensive classification for lycophytes and ferns, down to the genus level, utilizing a community-based approach. We use monophyly as the primary criterion for the recognition of taxa, but also aim to preserve existing taxa and circumscriptions that are both widely accepted and consistent with our understanding of pteridophyte phylogeny. In total, this classification treats an estimated 11 916 species in 337 genera, 51 families, 14 orders, and two classes. This classification is not intended as the final word on lycophyte and fern taxonomy, but rather a summary statement of current hypotheses, derived from the best available data and shaped by those most familiar with the plants in question. We hope that it will serve as a resource for those wanting references to the recent literature on pteridophyte phylogeny and classification, a framework for guiding future investigations, and a stimulus to further discourse.
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  • Tsutsumi, Chie, et al. (författare)
  • Phylogeny and classification of Davalliaceae on the basis of chloroplast and nuclear markers
  • 2016
  • Ingår i: Taxon. - : Wiley. - 0040-0262 .- 1996-8175. ; 65:6, s. 1236-1248
  • Tidskriftsartikel (refereegranskat)abstract
    • Davalliaceae have been classified on the basis of morphological data or morphological and molecular data. The family has been divided into various genera, the circumscription of which may differ between authors. Previous phylogenetic analyses used limited numbers of genes and taxa. We studied the molecular phylogeny of the family by using two nuclear markers (LEAFY intron 1, gapCp intron) and a long chloroplast marker (atpB-rbcL-accD) in 55 specimens of 41 species. The results indicated that Davalliaceae are divided into seven clades, six of which coincide with the genera and sections sensu Kato & Tsutsumi. The relationships among the clades were inconsistent with respect to the markers analyzed, and a species tree derived from all datasets did not resolve the relationships. In addition, the clades were not well characterized to be classified at the genus level. Therefore, we propose to classify Davalliaceae in the single genus Davallia with seven sections, i.e., sect. Araiostegiella, sect. Davallia (comprising only D. canariensis), sect. Davallodes (including Araiostegia p.p. and Paradavallodes), sect. Humata (including Pachypleuria and Parasorus), sect. Scyphularia (s.l. = sect. Davallia sensu Kato & Tsutsumi excluding the type), sect. Trogostolon (s.l. = sect. Trogostolon sensu Kato & Tsutsumi), and sect. Cordisquama (s.l. = Wibelia sensu Kato & Tsutsumi). A key to the sections and a table of characters for the sections are provided.
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