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The systematic position of the genus Bryhnia Kaurin has been problematic and remains unsettled. A phylogenetic analysis of Bryhnia and closely related genera, based on the nuclear marker ITS1–5·8S–ITS2 and the plastid markers rpl16, trnG, and trnL–F, was carried out to clarify their relationships and systematic positions. The phylogenetic trees generated from Maximum parsimony and Bayesian analyses show that Bryhnia s.s., represented by B. novae-angliae (Sull. & Lesq.) Grout, B. hultenii E.B.Bartram, and B. scabrida (Lindb.) Kaurin, forms a maximally supported clade nested within Brachythecium Schimp. ‘Bryhnia scabrida’ sensu is Bryhnia brachycladula Cardot, and together they form a monophyletic group with Eurhynchiadelphus eustegia (Besch.) Ignatov & Huttunen and Myuroclada maximowiczii (G.G.Borshch.) Steere & W.B.Schofield. We propose the inclusion of the species currently recognized in Bryhnia in Brachythecium, with the transfer of Bryhnia brachycladula to the genus Myuroclada Besch. Bryhnia brachycladula is further treated as a synonym of the new combination, Myuroclada longiramea (Müll.Hal.) M.Li, Y.F.Wang, M.S.Ignatov & S.Huttunen. [ABSTRACT FROM AUTHOR]

The article offers information on the characteristics of two Meteorium species, Meteorium balansaenum and Meteorium undulifolium. It states that the two species are totally different from other kinds of Meteorium in morphology. Meteorium undulifolium is a rare species and only been reported from Panama, while Meteorium balansaenum is little known species and only known from its type of locality. Information on the physical characteristics of the two plants is also offered.

The random amplified polymorphic DNA (RAPD) technique was applied to assess genetic diversity and population structure of Brachythecium rivulare Schimp. (Brachytheciaceae) from Foping Nature Reserve (Qinling Mountain, China). Sixty individuals from five populations along an elevational gradient were investigated by RAPD profiles. Of the 61 primers screened, 12 primers amplified clear and reproducible bands. Using these primers, 122 discernible bands were generated with 82 (67.2%) being polymorphic. The results revealed a high level of genetic variation (percentage of polymorphic loci ranged from 53.28% to 63.11%; mean expected heterozygosity per locus ranged from 0.2024 to 0.2431; Shannon diversity index ranged from 0.3011 to 0.3582; genetic identity ranged from 0.8626 to 0.9395, with a mean of 0.9118; genetic distances ranged from 0.0624 to 0.1478, with a mean of 0.1008). Analysis of molecular variance showed that a large proportion of genetic variation (91.20%) resided within populations, whereas only 8.80% resided among populations. The results also show no significant correlation between genetic distance and elevational gradient among these five populations. [ABSTRACT FROM AUTHOR]

The article discusses the features of Entodon acutifolius, which is the other term for Platygyriella aurea flora species located in China. Accordingly, Entodon has a yellow seta and a lack of annular distinguishing feature. It is said that the kind of species is best placed with same classification with Platygriella aurea.