Czernyadjeva, I.V. & E.A. Ignatova. Dichelyma (Fontinalaceae, Bryophyta) in Russia
Arctoa (2013) 22: 111-120
Four species of Dichelyma are known at present in Russia: D. capillaceum (With.) Myrin, D. falcatum (Hedw.) Myrin, D. japonicum Card. and D. uncinatum Mitt. The latter species is newly reported for the country. It was discovered in herbarium collections from Commander Islands (Kamchatsky Territory), Chukotka and Anabar Plateau (Krasnoyarsk Territory, Taimyr District). All these specimens were previously identified as D. capillaceum. Distribution of the latter species in Russia is restricted to central and northern parts of european Russia and Western Siberia (middle course of Ob River). Dichelyma falcatum is not rare in northern part of european Russia and in montane areas of southern Siberia and Chukotka, known also in central european Russia (south to Tver Province), Urals, Western Siberia, southern Taimyr, Republic Sakha/Yakutia and Kamchatka. Dichelyma japonicum is known from single locality in Kuril Islands. Key to identification, descriptions, data on distribution in Russia and ecology are provided for all species, illustrations of D. capillaceum and D. uncinatum are also included.