Phylum Ascomycota Caval.-Sm. (1998) - sac fungi Subphylum Pezizomycotina O.E. Erikss. & Winka (1997) Class Lecanoromycetes O.E. Erikss. & Winka (1997) Subclass Lecanoromycetidae P.M.Kirk, P.F. Cannon, J.C. David & Stalpers ex Miądl., Lutzoni & Lumbsch (2007) Order Peltigerales Walt. Watson (1929) Family Collemataceae Zenker (1827) 1 Genus Blennothallia Trevis. (1853) 2 Genus Callome Otálora & Wedin (2014) 3 Genus Collema Weber ex F.H. Wigg. (1780), nom. sanct., nom. cons. 4 Genus Enchylium (Ach.) Gray (1821) 5 Genus Lathagrium (Ach.) Gray (1821) 6 Genus Leptogium (Ach.) Gray (1821) 7 Genus Pseudoleptogium Müll.Arg. (1885) 8 Genus Rostania Trevis. (1880) 9 Genus Scytinium (Ach.) Gray (1821)