formation - One of the earth's largest subdivisions of vegetation types, usually of huge geographical extent and composed of communities that are similar in physiognomy and broad environmental description, such as the coniferous forests of Canada. See also: climax, biome. ;
дс тдрлими цюлютдажкию дроемжки аиакиохдйис лидр
http://glossary.gardenweb.com/glossary/formation;