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The results of the study of morphology and ecology of green algae isolated from the gray forest soil are presented. Of the 41 strains identified to species level, 22 % (9 species) are first found in the algal flora of Russian soils including gray forest soils. Interesting, new or uncertain findings of the green algae of gray forest soil are discussed.

Nodosilinea epilithica Perkerson et Casamatta is reported for the first time for Russia. The sample was isolated from a typical chestnut soil in the zone of dry steppes (Volgograd Region) and its identity was confirmed by morphological and molecular analyses. The specific feature of the studied strain is its ability to form nodules at normal (60–75 μmol photons ∙ m-2 ∙ sec-1) light. The number of nodules is supposed to be related to the age of a cyanobacterial culture.