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a genus of lichens of the family Stictaceae. They resemble large foliaceous blades with sinuate edges. These lichens, which grow most commonly on the bark of trees (less frequently on other substrates), are found primarily in warm countries. There are approximately 80 known species. About 15 species are found in the USSR, primarily in the Far East. Lungwort (Lobaria pulmonaria), which has a reticular-alveolate upper surface that to some degree resembles a lung, is the most widely distributed species. Lungwort is used in the perfume industry.