NEW LOCATIONS OF SOME RARE AND BORDERLINE SPECIES IN THE AMALAT RIVER BASIN (NORTHERN TRANSBAIKALIA)
E.M. Pyzhikova1, I.Yu. Selyutina2, M.G. Tsyrenova1
1Banzarov Buryat State University, 24a, Smolina str., Ulan-Ude, 670000, Russia
2Central Siberian Botanical Garden, SB RAS, 101, Zolotodolinskaya str., Novosibirsk, 630090, Russia
Keywords: new locations, Nothern Transbaikalia, vascular plants, floristic findings
Abstract
As a result of long-term expeditionary studies of the poorly studied flora of the Baunt Basin (Northern Transbaikalia) 27 locations of 15 species of rare and located on the border of the range of plants were identified. New habitats of plants of the Red Book of Buryatia were found (three habitats of Allium altaicum and Caragana jubata, two Cypripedium macranthos and one Gastrolychnis popovii). Finding new populations of species listed in the Red Book is necessary for the effective protection measures. Thanks to the findings of species located at the border of their distribution (on the north Adenonema cherleriae, Hemerocallis minor, Ligularia fischeri, Melica turczaninowiana, Rheum rhabarbarum, Saussurea baicalensis, Veronica linarifolia on the north-west - Artemisia freyniana; on the east - Spirea alpina, on the south-east - Dryas sumneviczii, on the south - Gypsophylla sambukii) the understanding of the range structure of these species has been expanded. 6 species (Anemonastrum crinitum, Artemisia freyniana, Artemisia macilenta, Cuscuta europaea, Saussurea baicalensis, Viola variegata) were recorded for the first time in the surveyed area. It should be noted that most of the found species tend to specific habitats in the study area - these are outcrops of limestone rocks, steep rocky slopes of southern exposures, basalt stony placers, which, against the background of the dominance of cryophytic Daurian larch forests, gives specific features to this flora.
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