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Issue: Vol. 372 No. 1: 10 October 2018
Type: Article
Published: 2018-10-10
DOI: 10.11646/phytotaxa.372.1.8
Page range: 97–103
Abstract views: 36
PDF downloaded: 1

Didymodon obtusus (Bryophyta, Pottiaceae), a new species from Tibet, China

1 Beijing key Laboratory of Biodiversity and Organic Farming, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China; 2 School of life sciences, Northeast NormalUniversity, Changchun 130024, China
College of Grassland, Resources and Environment, Key Laboratory of Grassland Resources, Ministry of Education P.R. of China, Key Laboratory of Forage Cultivation, Processing and High Efficient Utilization of Ministry of Agriculture, Inner Mongolia Agricultural University, Hohhot 010011, China
Beijing key Laboratory of Biodiversity and Organic Farming, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
High altitude taxonomy Asia

Abstract

A new moss species, Didymodon obtusus J. Kou, X.-M. Shao & C. Feng, is described and illustrated from Tibet, China. It differs most saliently from congeners by the combination of ovate-lanceolate to oblong-lanceolate and appressed leaves when dry, bistratose leaf lamina, obtuse leaf apex, 2–3-stratose leaf margins, percurrent costa, cross-section of the costa with 2–3 layers of guide cells and without ventral stereids, and smooth laminal cells. This species is compared with similar species and its ecology is discussed.