The paper presents the results of systematic and ecological floristic investigations on lichens in ecotopes near the town Ilovaisk, Donetsk region. Systematical analysis has shown that lichenoflora comprises 22 species which belong to 13 genera, 10 families. Five species of them, namely – Acarospora schorica Vodop., Lecanora erysibantha Nyl., Placolecanora thulensis (Th. Fr.) Kopacz., Sarcogyne gibberella (Nyl.) H. Magn. – are rare ones both for the south-east as and the whole territory of Ukraine and are of floristic value. The finding as a result of ecological analysis have shown that lichenoflora is presented with heliophytes, acidophiles (54,5% for each group) and epilithes (91%). Key words: lichens, south-east of Ukraine, ecotopes.