A new evaluation of the genus Trichostomopsis (Pottiaceae, Bryophyta)

Abstract

New taxonomic data are provided for the genus Didymodon , after a revision of the species treated as Trichostomopsis . Only two species are now recognized: D. australasiae and D. umbrosus . Trichostomopsis curvipes and T. trivialis recognized by previous authors are reduced to synonyms of D. umbrosus , while Trichostomopsis haussknechtii is synonymized with D. australasiae . Other taxa studied, such as Barbula bistrata , B. incrassata , B. linguaecuspis , Tortula cabulica , T. cucullifolia and T. geniculata , have been synonymized with D. australasiae. Didymodon torquescens is proposed as a synonym of D. revolutus . Lectotypes for Barbula ecuadoriensis , B. haussknechtii , B. incrassata , B. linguaecuspis , B. nanocaulis , B. poeppigiana , B. rufiseta, B. trichostomacea , B. trivialis , Didymodon patentifolius , D. subtophaceus , Tortula geniculata , Trichostomopsis crispifolia , and Trichostomum fuscescens are proposed. Morphological descriptions, distribution data, illustrations, LM and SEM photographs of the species recognized are included.

A new species of Didymodon Hedw. (Pottiaceae, Bryophyta) from Peru

“…Hal.) R. H. Zander, two widely distributed species, are in many respects similar to D. incurvus, and could be confused with it, but both differ from D. incurvus by their leaves being crisped, twisted or incurved when dry, leaf margins plane or lightly recurved and bi-to tristratose above midleaf, and basal laminal cells differentiated (Jiménez et al, 2005;Jiménez, 2006).…”

Didymodon australasiae (Pottiaceae, Bryophyta), a new species for Russia

“…The species was collected in Sokhondinsky Nature Reserve, which is situated in the south of Zabaikalsky Territory. Didymodon australasiae occurs at all continents in mostly xeric areas (Jiménez et al, 2005); the nearest known location of the species is in Mongolia (Tsegmed, 2010). Beside that, it is reported from southern Kazakhstan, Uzbekistan, Afghanistan and Turkmenistan (Abramov et al, 1986;Jiménez et al, 2005).…”

“…Didymodon australasiae occurs at all continents in mostly xeric areas (Jiménez et al, 2005); the nearest known location of the species is in Mongolia (Tsegmed, 2010). Beside that, it is reported from southern Kazakhstan, Uzbekistan, Afghanistan and Turkmenistan (Abramov et al, 1986;Jiménez et al, 2005). Some of the earlier Asian records were published under the names Didymodon (Trichostomopsis) aaronis (Lorentz) J. Guerra, D. incrassatus (Lindb.)…”

“…Broth., or D. haussknechtii (Jur. & Milde) Broth., which were put into synonymy with D. australasiae by Jiménez et al (2005).…”

“…In Sokhondinsky Reserve, the species was collected in a rather small quantity on a steppe slope in niches and cracks of south-facing rock outcrops and on soil among rocks. (Jiménez et al, 2005;O'Shea, 2006;Zander, 2007;Ros et al, 2013). The locality in Zabaikalsky Territory extends northwards its known distribution in Asia.…”