Mustafina A. N. RussiaUfaBotanical Garden-Institute of Ufa Scientific Centre, Russian Academy of Sciences, 195/3 Mendeleev Str., Ufa 450080, Russiaalfverta@mail.ru Author's articles FEATURES OF THE POPULATION ORGANIZATION OF THE RARE SPECIES CEPHALARIA URALENSIS (MURR.) SCHRAD. ex ROEM. ET SCHULT (DIPSACACEAE, MAGNOLIÓPSIDA) IN THE TRANS-VOLGA AND CIS-URALS REGIONS