Současný stav populací druhů Helodium blandowii (Thuidiaceae) a Scorpidium scorpioides (Calliergonaceae) v České republice

Populations of two endangered moss species Helodium blandowii and Scorpidium scorpioides were investigated in all recently known localities in the Czech Republic. At each locality, population size, basic water chemistry and vegetation characteristics were recorded. Recently, H. blandowii occurs at five localities – fen meadows and moderately rich fen. Its populations but one are rather small. S. scorpioides grows in seven sites – rich or calcareous rich fens and inundated sand pit and its populations are rather large.