Monitoring the occurrence of plants rare species from orchid family in Ilmenskiy reserve

At the territory of Ilmenskiy state reserve comparative research of occurrence the species from Orchid family is conducted. It is shown that over the last 50 years there appeared 4 new species, 13 species didn't change the occurrence, 3 species reduced it and 1 species wasn't found. Depending on category of rarity Orchids at the territory of the reserve are divided into 3 groups: species presented in the reserve of one, two-five, six and more coenopopulations.