The algae flora of undercurrent Zeravshan River was studed. Two hundred seventy-four species were found (i.e. 191 species, 75 variations, 8 forms), 76 species of them are water quality indicators. Seasonal changes and distribution of algae recorded in undercurrent of river. Saprobic-indicators algae and sanitary quality of water are revealed.

Keywords: algae flora, saprobic-indicators algae, Zeravshan River, mineralization

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