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Soderstrom L.,Norwegian University of Science and Technology | Hagborg A.,Field Museum | Von Konrat M.,Field Museum | Bartholomew-Began S.,West Chester University | And 36 more authors.
PhytoKeys | Year: 2016

A working checklist of accepted taxa worldwide is vital in achieving the goal of developing an online flora of all known plants by 2020 as part of the Global Strategy for Plant Conservation. We here present the first-ever worldwide checklist for liverworts (Marchantiophyta) and hornworts (Anthocerotophyta) that includes 7486 species in 398 genera representing 92 families from the two phyla. The checklist has far reaching implications and applications, including providing a valuable tool for taxonomists and systematists, analyzing phytogeographic and diversity patterns, aiding in the assessment of floristic and taxonomic knowledge, and identifying geographical gaps in our understanding of the global liverwort and hornwort flora. The checklist is derived from a working data set centralizing nomenclature, taxonomy and geography on a global scale. Prior to this effort a lack of centralization has been a major impediment for the study and analysis of species richness, conservation and systematic research at both regional and global scales. The success of this checklist, initiated in 2008, has been underpinned by its community approach involving taxonomic specialists working towards a consensus on taxonomy, nomenclature and distribution.

Zuo Q.,Shenzhen Key Laboratory of Southern Subtropical Plant Diversity | Zhang S.,Shenzhen Key Laboratory of Southern Subtropical Plant Diversity | Zhang L.,Shenzhen Key Laboratory of Southern Subtropical Plant Diversity
Journal of Bryology | Year: 2015

Hypopterygium obstusum is described and illustrated as a new moss species from Guizhou, southwest China. The new species is mainly characterized by its medium to large size, irregularly pinnate to bipinnate branching, absence of axial cavities, octostichous phyllotaxis, and isophyllous foliation in stipe and basal rachis, indistinct border in all leaves and amphigastria, acute to obtuse leaf apex in lateral frond leaves, and presence of gemmae. Phylogenetic analysis resolved H. obstusum sister to H. flavolimbatum based on plastid rps4, trnG, trnL–F, and nuclear internal transcribed spacer (ITS) sequences. A detailed morphological description, an illustration of the new species, and a key to all Chinese species of this genus are provided. © 2015, British Bryological Society.

Hentschel J.,Friedrich - Schiller University of Jena | von Konrat M.,Gantz Family Collections Center | Soderstrom L.,Norwegian University of Science and Technology | Hagborg A.,Gantz Family Collections Center | And 4 more authors.
Phytotaxa | Year: 2015

The liverwort family Frullaniaceae is circumscribed to include the single genus, Frullania, and has a complex and confusing taxonomical history. An overview is provided for the infrageneric classification adopted for the forthcoming worldwide checklist based on recent morphological and molecular studies. The genus is preliminarily subdivided into eleven subgenera, F. subg. Chonanthelia, F. subg. Diastaloba, F. subg. Diversitextae, F. subg. Frullania, F. subg. Homotropantha, F. subg. Mammillosae, F. subg. Meteoriopsis, F. subg. Microfrullania, F. subg. Saccophora, F. subg. Steerea, and F. subg. Thyopsiella, as well as several sections. However, some of the subgeneric divisions are only doubtfully recognized because there is still insufficient knowledge to arrive at a decision regarding their systematic status and placement. The taxa may be either originally not well described, not restudied recently or molecular analyses point to a more complex internal structure of the respective group. Fourteen new synonyms, eight new combinations, five new names, eight lectotypifications, and one new variety are provided. © 2015 Magnolia Press.

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