Herbarium of SSU (SARAT) To the Question of Distribution of the Lemnaceaes’ Species and Communities with Their Participation in the Saratov Region Authors: Arkhipova E. A., Sedova O. V., Boldyrev V. A., Kozyreva E. A. The article presents the materials of the distribution of five species of the Lemnaceae in the Saratov region on the basis of materials of herbarium SSU (SARAT) and authors’ field notes.