iNaturalist observation: [ Ссылка ]

Spirogyra thallus consisting of two cells.

Phylum: Charophyta. Order: Zygnematales. Family: Zygnemataceae. _Spirogyra_ Link, 1820.
Genus _Spirogyra_, any member of a genus of some 400 species of free-floating green algae found in freshwater environments around the world. Named for their beautiful spiral chloroplasts, spirogyras are filamentous algae that consist of thin unbranched chains of cylindrical cells. They can form masses that float near the surface of streams and ponds, buoyed by oxygen bubbles released during photosynthesis.

A water sample was taken from the bank of the Ufa River. The sample was stored at room temperature and observed 3 days after collection.

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