Comparative description of the native and introductive populations of Allium ursinum L. and Tulipa quercetorum Klok. et Zoz

The results of comparative study of populations of two rare species of Ukrainian flora Allium ursinum L. and Tulipa quercetorum Klok. et Zoz in natural habitats are presented. The main parameters of native and introductive population of these species are characterized. The modeling of the populations of rare species of plants in artificial forest ecosystems as a method of their ex situ protection are considered