Geospatial investigation of distribution Salvia aethiopis L. (Lamiaceae) on the eastern limits of the range is performed using climatic modeling by MAXENT approach. Climatic conditions for the 33 local populations of the species as well as territories neighbouring to them were examined in detail, using concepts of nestle-cells and a small polygone. According to obtained results, the most suitable climatic conditions are in only two small polygons (SP) around local populations with coordinates 69.96E:42.48N and 70.03E:42.47N in central part of the area. They have 7.7 average points per a cell of 9.0 maximum. Other seven SP have average points per a cell 7.1–7.3 (quite suitable climatic conditions), all in the western part of the area, with coordinates from 66.69E to 67.69E and from 38.21N to 39.26N. High values of raw prediction are in the locations with coordinates 70.97E:42.48N (0.123; Zhualyn District in Zhambyl Region, Kazakhstan), 70.03E:42.47N (0.063; Keltemashat, Tulkibas District, Turkestan Region, Kazakhstan), 67.09E:38.34 (0.063; Yuqori Machay, Surkhandarya Region, Uzbekistan), and 69.96E:42.48N (0.054; Antonovka, Tulkibas District, Turkestan Region, Kazakhstan). These local populations of S. aethiopis should be assessed as the most likely secondary centers for further expansion of the species in the Middle Asian Region.
A system of the section Aphanoneuron (Nevski) Tzvelev of the genus Leymus Hochst. is proposed. The section is divided into the subsections Dasystachys Baikov et Lipin and Paboani Baikov et Lipin. The subsection Dasystachys is divided into the series Dasystachys Baikov et Lipin and Angusti Baikov et Lipin, the subsection Paboani is divided into the series Paboani Baikov et Lipin and Littorales Baikov et Lipin. 13 species of the genus Leymus in flora of Asian Russia are listed with data on their ecology, geographical distribution and types.
Computer modelling the map of average annual temperature in the ground layer of air is performed for the southern part of Western Siberia (Russia). Four methods for data interpolation were used in ArcMap 9. Procedure of creation of digital model is described in detail. An original mathematic way for ranking of methods is proposed. According to results, Ordinary Kriging method gives the best approximation to the initial data.
We present a critical revision of information about rare and endangered endemic species Salvia baldshuanica (Lamiaceae), included in the Red Books of the USSR and Tajikistan. As the nomenclatural type had been missing, we assembled information on the original herbarium material performed a proper typification of the species name. A chorological analysis of the species distribution in Middle Asia was carried out. To assess the state of the current natural populations, a topographic mapping of localities (Sanglok mountains, two isolated local populations; Sarsaryak ridge, one local population) was made. A narrow edaphic confinement of plants of this species to gypsum-bearing mountain soils has been established. A taxonomic assessment of the key morphological traits of S. baldshuanica confirmed at least the sectional level of its position within the subgenus Leonia. The species was found in nature only three times – in 1883, 1937 and 1979, which confirms its exceptional rarity and high scientific interest.
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