Coleosporium in Europe

The species of Coleosporium (Uredinales) occurring in Europe are not clearly differentiated morphologically. Most taxa in Europe have been combined into formae speciales (ff. spp.) of Coleosporium tussilaginis by the majority of researchers. This study includes the taxa C. doronici, C. inulae, and C. telekiae as further ff. spp. in C. tussilaginis and redefines the existing ff. spp. campanulae-rapunculoidis and senecionis-silvatici. It is hoped that this treatment will establish a pragmatic basis on which future taxonomic work can be built.