Abstract
BackgroundThe Skvortsov Herbarium of the Tsitsin Main Botanical Garden, Russian Academy of Sciences (MHA) in the 1945-1980s dealt with vascular plants and only scattered occasional collections of bryophytes and lichens were accumulated there without special arrangement. Since the late 1980s, the bryophyte studies in the MHA Herbarium became permanent and several projects were started since then, including the currently conducted “Moss Flora of Russia”. There are many white spots on the map of bryophyte exploration of Russia, but one of the most conspicuous was Yakutia, the largest administrative unit of Russia, covering 3,081,000 km2. Yana-Indigirka Region, originally defined as a floristic region, includes Verkhoyansky Range and some smaller adjacent mountain areas. It is the largest amongst the bryofloristic regions in Russia, but exploration of its territory, which is difficult to access, remains far from complete.New informationSeveral expeditions of the Institute for Biological Problems of Cryolithozone, Siberian Branch of Russian Academy of Sciences, and the Main Botanical Garden, Russian Academy of Sciences in 2000-2018 yielded in many bryophyte specimens, partly published in a number of papers. This dataset comprehensively represents the diversity of mosses of the Region. It includes 7,738 records of moss specimens preserved in the MHA Herbarium.
Highlights
Yana-Indigirka Region of Yakutia is an area defined by Karavaev (1958) for its mainly mountain region eastwards of Lena River and its largest right side tributary, the Aldan River
The original definition was only slightly modified by Kuznetsova (2005), but otherwise it remains in current use for biodiversity studies of Yakutia (Ivanova et al 2005) and it is used as one of subdivisions of Russian territory for the Moss Flora of Russia (Ignatov 2017, Ignatov 2018, Ignatov 2020) and its database (Ivanov et al 2017)
Accumulation of data on the moss flora of Yana-Indigirka Region of Yakutia started relatively late compared to its other parts, because early exploration of Yakutia was conducted either along the Arctic Ocean coast accessible by ships (Arnell 1913) or in Aldan Region in the southern Yakutia by expeditions of Kuzeneva and Prokhorov (Brotherus et al 1916)
Summary
The Skvortsov Herbarium of the Tsitsin Main Botanical Garden, Russian Academy of Sciences (MHA) in the 1945-1980s dealt with vascular plants and only scattered occasional collections of bryophytes and lichens were accumulated there without special arrangement. Yana-Indigirka Region, originally defined as a floristic region, includes Verkhoyansky Range and some smaller adjacent mountain areas It is the largest amongst the bryofloristic regions in Russia, but exploration of its territory, which is difficult to access, remains far from complete. Several expeditions of the Institute for Biological Problems of Cryolithozone, Siberian Branch of Russian Academy of Sciences, and the Main Botanical Garden, Russian Academy of Sciences in 2000-2018 yielded in many bryophyte specimens, partly published in a number of papers. This dataset comprehensively represents the diversity of mosses of the Region. Specimen, NE Asia, Verkhoyansk Mountain Range, Bryophyta, new records
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