Ilyina V. N. RussiaSamara Samara State University of Social Sciences and Education, 26 Antonova-Ovseyenko Str., Samara 443099, Russia5iva@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