Scirpetum radicantis in the Sudety Mts. This paper presents the environmental conditions, floristic structure and distribution of Scirpetum radicantis Hejný in Hejný et Husák 1978 (Phragmitetea R. Tx. et Prsg. 1942 class) in the Sudety Mts. During geobotanical research in the Sudety Mts in 2010– 2015, three Scirpetum radicantis sites were found, including two new ones (Fig. 1), located in breeding pond complexes at Podgórzyn – Staw Krowi pond (GPS 50°50′26″N, 15°42′11″E; ~350 m a.s.l.), Karpniki – Wielki Staw pond (50°51′17″N, 15°50′37″E; ~370 m a.s.l.) and a pond in a resort park in Kudowa-Zdrój (50°26′44″N, 16°14′18″E; ~380 m a.s.l.). In Europe, Scirpetum radicantis has usually been included in the group of endangered communities. The floristic composition and habitat conditions of these sites are similar to those of stations previously noted in Poland and other European countries. They differ only in absence of invasive plant species in phytocoenoses. The localities of Scirpetum radicantis on hills of the Sudety Mts are the first records for Central Europe.