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Type: Article
Published: 2010-12-31
Page range: 61–66
Abstract views: 124
PDF downloaded: 0

Further taxonomic rearrangements in the Brachytheciaceae (Bryophyta): Frahmiella, a new genus segregated from Rhynchostegiella

Main Botanical Garden of Russian Academy of Sciences, Botanicheskaya 4, Moscow 127276, Russia
University of Liège, Institute of Botany, B22 Sart Tilman, B-4000 Liège, Belgium University of Montpellier II, Institute of Evolutionary Sciences Montpellier, Place Eugène Bataillon, 34095 Montpellier cedex 5, France
Laboratory of Genetics, Dept. of Biology, FI-20014 University of Turku, Finland
Belozersky’ Institute of Physico-Chemical Biology, Moscow State University, Moscow 119991 Russia
University of Liège, Institute of Botany, B22 Sart Tilman, B-4000 Liège, Belgium
Herbarium, School of Life Science, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China
Brachytheciaceae bryophytes China Frahmiella nrITS phylogeny Rhynchostegiella

Abstract

The taxonomic position of Rhynchostegiella acicula, a local endemic of Shaanxi Province of China, is investigated by means of cladistic analyses employing nrITS sequences. The analyses show that R. acicula does not belong to Rhynchostegiella s.str. (Helicodontioideae) but is resolved within the Homalothecioideae as sister to Eurhynchiastrum, from which it differs by a soft and slender habit; narrow lanceolate and acuminate leaves; a percurrent costa; and an autoicous condition. It differs from Brachytheciastrum and Brachythecium in a longly rostrate operculum, and from Homalothecium in a small plants that lack thick-walled basal laminal cells characteristic of this genus, as well as in an autoicous inflorescence. As a consequence, R. acicula is transferred into its own, monospecific genus Frahmiella Ignatov, Vanderpoorten & Wang You-fang, gen. nov.

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