Species composition of genus Pinnularia from sphagnum bogs are discussed on the basis of personal and literary data. From Privolzhskaya hills (Penza region) and Polistovo-Lovatsky sphagnous tract 19 new for the flora of Russia species are discovered. 75 species Pinnularia are recorded in these regions.
Keywords: Pinnularia, sphagnum bogs, new for the flora of Russia
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