<i>CHARA STRIGOSA (STREPTOPHYTA: CHARALES) </i>IN RUSSIA
The general range of a rare endangered stenotopic species <i>Chara strigosa</i> A. Braun ( <i>Streptophyta: Charales</i>) is outlined and all its localities in Russia are listed. Its new localities were found in the northern part of the Far East, Eastern Siberia, Altay, central part of East-European Plain and south-eastern Fennoscandia. They significantly refine the eastern part of <i>C. strigosa</i> range and fill spatial gaps between its East-European and South-Uralian localities. The refined map of its distribution was compiled on the base of published and original data. The detailed morphological description of the studied specimens is presented. The possibility of abundant population long-term existence was estimated for several regions. It is supposed for the Southern Ural, eastern part of Fennoscandia and the north of Baikal region. <i>C. strigosa</i> is a rare stenobiont species included in the Red Data Book of Russia. So it needs protection in all regions with its localities, i. e. in Arkhangelsk, Chelyabinsk, Irkutsk, Magadan, Novgorod, Pskov, Tver, Yaroslavl Regions, Zabaykalsky Krai, Republics of Altay, Buryatia, Karelia and Mari El.