Phytocenotic and biomorphologic peculiarities of Bupleurum scorzonerifolium Willd and Bupleurum sibiricum Vest. in East Zabaikal1e

Bupleurum scorzonerifolium Willd and Bupleurum sibiricum Vest, are valuable medicinal plants which occur at open places "with unclosed vegetable cover. Growth conditions (temperature and humidity) have a great influence on morphologic characteristics of the plants. Flowering rhythm is determined by the vegetation period conditions. Heat provision is a basic ecological factor.