Tubanova D.Ya.1, Tumurova O.D.1, Ignatova E.A.2 2017. The genus Mielichhoferia (Mielichhoferiaceae, Bryophyta) in Russia // Arctoa. Vol. 26 (2): 166–180 [in English].

1 Institute of General and Experimental Biology SB RAS, Sakhjanovoy str., 6, Ulan-Ude, 670047 Russia; e-mail: tdolgor@mail.ru

2 Lomonosov Moscow State University, Faculty of Biology, Geobotany Dept., Leninskie Gory Str. 1-12, Moscow 119234 Russia; e-mail: arctoa@list.ru

KEYWORDS: mosses, taxonomic revision, molecular phylogeny, cryptic species, new species

ABSTRACT. A revision of the genus Mielichhoferia in Russia is performed basing on morphological and molecular phylogenetic study. Specimens were found in two major clades, corresponding to M. mielichhoferiana s.l. and M. elongata s.l. Each of these clades includes subclades corresponding to cryptic species. Interesting is that almost all cryptic species discovered in the analysis of Shaw et al. (2000) for North America and Europe were also found in Russia. Mosses of two clades nested within the M. elongata s.l. major clade were found well delimited morphologically. One of them corresponds to M. japonica, which is characterized by strongly reduced peristome and narrow leaves with recurved marginal teeth of narrowly acute leaves. Another morphotype characterized by thick-walled cells is described as a new species, M. asiatica. The latter is known only in Eastern Siberia and Sakhalin.

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doi: 10.15298/arctoa.26.16