Four new species of Hieracium (Asteraceae) from southern Sweden

Three new species belonging to Hieracium sect. Hieracium, viz. H. argentarium, H. irmae and H. mucrodentatum, are described from the Swedish province of Värmland. In addition, H. acidolepis is described anew to accommodate the taxon hitherto known as H. acidotum (Dahlst.) Dahlst., because the type specimen (from Värmland) for that name has been shown to belong to a different species