Ignatova, E.A., I.V. Czernyadjeva, A.V. Fedorova & V.E. Fedosov. 2024. О роде Tortella (Pottiaceae, Bryophyta) в Российской Арктике

Arctoa (2024) 33: 195–209

doi: 10.15298/arctoa.33.20

Herbarium collections of Tortella and Trichostomum from the Russian Arctic in LE, MW and MHA were revised according to the emended understanding of species volume in recent literature. Tortella splendida was found to be the most frequent in this territory and T. spitzbergensis appeared to be common in northern Taimyr and Chukotka, while distribution of T. tortuosa in the Russian Arctic is likely restricted to Chukotka and Polar Urals. Tortella cuspidatissima is newly recorded to Chukotka, in addition to the single known locality in the lower course of Lena River. The relationships between Scandinavian and Chukotkan specimens of this species based on molecular markers and morphological characters are discussed. Tortella fleischeri is found for the first time in European Arctic, as well as in Russia; its presence here is confirmed with molecular barcoding.