Ecological and biological features of the distribution of Globularia bisnagarica and Globularia vulgaris (Plantaginaceae) in different parts of the ancient range

The article presents the results of long-term studies of Globularia bisnagarica L. populations in the eastern part of its disjunctive range and new studies related to the presence of a closely related species Globularia vulgaris L. in the main part of the once single range in the Mediterranean. For the Volga region and the Urals, the names of associations with the participation of Globularia bisnagarica are given; for phytocenoses with the participation of Globularia vulgaris, a systematic list of associated plants in the vicinity of the Montserrat National Park, Spain, is given. This list includes 51 species of vascular plants belonging to 44 genera and 29 families. The presence of relics in the communities of the Ulyanovsk region and Montserrat indicates the antiquity of their range and existing connections in distribution. Analysis of the populations showed that the studied species are obligatory calciphiles, erosiophytes and coenophobes.