The genus Opegrapha sensu lato in India is revised. It deals with the detailed account of Opegrapha, known so far from India, based on comprehensive investigations on the types and voucher specimens deposited in various Indian and foreign herbaria viz., AMH, ASSAM, BM, BSA, BSHC, CAL, G, GLAM, hb, AWAS, H-NYL, L, LWG, LWU, M, PBL, S, TUR AND W, additional live collections and relevant literature. All the earlier erroneously identified herbarium collections were ...