EN
The work contains some remarks on the taxonomy and ecology of
the 23 diatom taxons from the genus Navicula Bory to be found in the microbenthos of
3 rivers of Central Poland: Bzura, Mroga and Rawka. The data concerning diatom
dimensions as well as the number of striae per 10 µm have been compared with those
given by Hustedt (1930), Cleve-Euler (1953), Patrick, Reimer (1966),
Germain (1981) and Kramer, Lange-Bertalot (1986).