The methanolic extracts of Hieracium gymnocephalum, H. suborienii, H. blecicii, H. coloriscapum, H. guentheri-beckii, H. naegelianum and H. rotundatum were analysed by HPLC and TLC in order to examine their flavonoids and phenolic acids. With the exception of H. rotundatum, which grows in shaded places, all species exhibit a similar pattern of phenolic substances with chlorogenic acid, 3,5-dicaffeoylquinic acid and luteolin 7-O-glucoside as the main compounds. The chemotaxonomic significance is discussed.