Studies on diversity of fungi colonizing and damaging selected plant parts of ribwort (Plantago lanceolata L.) were carried out in 2009–2011 on plantations grouped in south-eastern Poland. Fungi were isolated from superficially disinfected roots, collar roots and leaves by means of a mineral medium. Fungi from Fusarium spp., Boeremia exigua var. exigua comb. nov. and Rhizoctonia solani were obtained from the roots and collar roots showing necrosis and tissue decay. Phyllosticta plantaginis was commonly obtained from the leaves with symptoms of small, regular, necrotic spots. This species had not been found in Poland earlier.

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