Botanists determined areas where it is easiest to die from plants
Having compared the habitats of each species with the biomes that are within its range, the geobotanists got the picture of the distribution of definitively poisonous plants. It turned out that the greatest variety of dangerous species is in the plains of the Black Sea and also in Ciscaucasia and Zavolzhsko-Kulunda biomes; about 70 percent of all types of poisonous plants in Russia can be observed there. There are slightly less of those in the lowland desert — the Caspian biome (60%) and the flat forest steppes — the biomes of the regions of Dnieper and Volga rivers, Tobol and Ob rivers, Trans-Volga area, and the Crimea and Caucasus (between 51 and 59%). Up to 65 percent of recorded species can be found in the mountains of the Crimea, the Caucasus, Altai, Sayan, Primorye, and Sakhalin. Half of the plants from the list are found in mixed forests and taiga. The smallest variety of species of poisonous plants is found in the tundra.
Statistical analysis has shown that the distribution of poisonous plants is mainly influenced by the temperature and not by the humidity of the climate. The higher it is, the higher the number of the dangerous plants in the area is.