Ignatov M.S.1,2, Fedosov V.E.1, Fedorova A.V.3, Ignatova E.A.1 2016. On the systematic position of Discelium (Bryophyta) // Arctoa. Vol. 25: 278–284 [in English].

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

2 Tsitsin Main Botanical Garden, Russian Academy of Sciences, Botanicheskaya 4, Moscow 127276 Russia; e-mail: misha_ignatov@list.ru

3 Lomonosov Moscow State University, Belozersky Institute of Physico-Chemical Biology, Moscow 119991 Russia; e-mail: alina_77777@mail.ru

KEYWORDS: mosses, taxonomy, molecular phylogenetics, new order

ABSTRACT. Results of molecular phylogenetic analysis support the position of the genus Discelium in the group of diplolepideous opposite mosses, Funariidae; however, its affinity is stronger with Encalyptales than with Funariales, where it is currently placed. A number of neglected morphological characters also indicate that Discelium is related to Funariales no closer than to Encalyptales, and thus new order Disceliales is proposed. Within the Encalyptaceae a case of strong sporophyte reduction is revealed. Bryobartramia appeared to be nested in Encalypta sect. Rhabdotheca, thus this genus is synonymized with Encalypta.

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doi 10.15298/arctoa.25.21