A new site for Luticola vanheurckii Van de Vijver & Levkov (Bacillariophyta) – the second record from Europe

This paper presents the first record of Luticola vanheurckii Van de Vijver & Levkov, outside of the type locality (second record in the Europe). Authors present habitat characteristic of the species, with LM and SEM micrographs. Luticola vanheurckii was found in a small outflow of water from storm sewers in Stalowa Wola (SE Poland). Luticola vanheurckii occurred only rarely (0–5 valves per slide), in a small, shallow puddle which was supplied by the water from the outflow. This species was recorded in sediments and on plants submerged in water with a wide range of conductivity (347–22,100 μS cm(−1)), chloride content (64.56–6195.0 mg l(−1)) and sodium ions (43.04–3789.1 mg l(−1)). The cells observed in the examined material were slightly longer and wider than those from type locality.