Tubanova D.Ya.1, Goryunov D.V.2, Ignatova E.A.3, Ignatov M.S.2 2010. On the taxonomy of Dicranum acutifolium and D. fuscescens complexes (Dicranaceae, Bryophyta) in Russia // Arctoa. Vol. 19: 151–164 [in English].

1 Institute of general and experimental Biology of Siberian Branch of Russian Academy of Sciences, Sakhjanovoy str., 6, Ulan-Ude 670047 Russia; e-mail: tdolgor@mail.ru

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

3 Biological Faculty, Moscow State University, Moscow 119234 Russia; e-mail: arctoa@list.ru

KEYWORDS: Dicranum, ITS, mosses, new species, new synonym, Russia.

ABSTRACT. ITS sequences of taxonomically difficult complexes in the genus Dicranum, D. fuscescens-D. flexicaule and D. brevifolium-D. acutifolium-D. pseudacutifolium, are analyzed. Type specimens of D. pseudacutifolium are found to be poorly develo­ped specimens of D. flexicaule and therefore the former name is synonymizedwith the latter. At the same time, several specimens previously identified as D. brevifolium were found to be in a separate clade; they also have morphological differences and are described as a new species, D. septentrionale sp. nova.

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doi 10.15298/arctoa.19.13