Sphagnum rubellum, extrémně vzácný druh na jesenických vrchovištích: výsledky terénního průzkumu a revize herbářových položek

We revised the distribution of Sphagnum rubellum in the Hrubý Jeseník Mts (Czech Republic). Contrary to previous expectations, revision of herbarium specimens proved only the occurrence of this species in the Rejvíz bog and in another mire that no longer exists near the Dolní Lipová village. Detailed field research of saddle bogs brought one new record from the Trojmezí bog (close to Vozka Mt.). Sphagnum russowii is the dominating species from section Acutifolia in bogs of the study area. Predominance of S. russowii over S. rubellum could be explained by the relatively short Holocene history, small area of bogs, shallow peat layer or hybridization.