A study of lichen collections in BAK and LE revealed three new to Azerbaijan species of Megasporaceae, Aspicilia coronata (A. Massal.) B. de Lesdain, A. rosacea Hue, and Sagedia zonata Ach. Morphological characters, secondary chemistry and distribution of the species are discussed. A combination Circinaria coronata (A. Massal.) Wirth, Hauck et M. Schultz ex Paukov et Alverdiyeva is validated and a new combination, Oxneriaria rosacea (Hue) Paukov et Alverdiyeva is proposed. Keywords: Aspicilia, Greater Caucasus, Lesser Caucasus, lichen biota, morphology, secondary chemistry.