EN
The paper presents results of geobotanical investigations carried out in the projected “Ciswickie Bagna” nature reserve near Grodziec (eastern Wielkopolska). Rich flora of vascular plants consists of 274 taxons, including 10 species protected by law, e.g. Osmunda regalis L. In 41 plant communities found, 24 are endangered in the Wielkopolska including the E category (dying out, directly threatened with extinction) represented by as many as 7 associations with the most valuable forest community of the reserve Vaccinio uliginosi–Pinetum Kleist 1929 nom. inv.