The paper summarizes the accumulated data on distribution and status of coenopopulations 5 lichen species listed in Red Data Book Rostov Region: Cetraria steppae, Cladonia foliacea, C. magyarica, Xanthoparmelia pulla, Thalloidima sedifolium. physaroides detected for first time territory Region. In region under study, 32 new localities 20 15 7 sedifolium, 11 Th. were identified. limiting factors...