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 (2001), nom. inval. see Subclass Lecanoromycetidae P.M.Kirk, P.F. Cannon, J.C. David & Stalpers ex Miądl., Lutzoni & Lumbsch (2007)
         Order Lecanorales Nannf. (1932)
           01 Family Anziaceae M. Satô (1939) see Family Parmeliaceae Zenker (1827)
           02 ?Family Arthrorhaphidaceae Poelt & Hafellner (1976)
           03 Family Biatorellaceae M. Choisy ex Hafellner & Casares (1992)
           04 Family Caliciaceae Chevall. (1826)
           05 Family Calycidiaceae Elenkin (1929) see Family Sphaerophoraceae Fr. (1831)
           06 Family Catillariaceae Hafellner (1984)
           07 Family Cetradoniaceae J.C. Wei & Ahti (2002) see Family Cladoniaceae Zenker (1827)
           08 Family Cladoniaceae Zenker (1827)
           09 Family Crocyniaceae M. Choisy ex Hafellner (1984) see Family Ramalinaceae C.Agardh (1821)
           10 Family Dactylosporaceae Bellem. & Hafellner (1982)
           11 Family Gypsoplacaceae Timdal (1990)
           12 Family Haematommataceae Hafellner (1984)
           13 Family Lecanoraceae Körb. (1855)
           14 Family Lecideaceae Chevall. (1826)
           15 Family Loxosporaceae Kalb & Staiger (1995) see Family Sarrameanaceae Hafellner (1984)
           16 Family Megalariaceae Hafellner (1984)
           17 Family Miltideaceae Hafellner (1984)
           18 Family Mycoblastaceae Hafellner (1984) see Family Tephromelataceae Hafellner (1984)
           19 Family Ophioparmaceae R.W. Rogers & Hafellner (1988)
           20 Family Pachyascaceae Poelt ex P.M.Kirk, P.F. Cannon & J.C. David (2001)
           21 Family Parmeliaceae Zenker (1827)
           22 Family Physciaceae A. Schneid. (1897), nom. cons.
           23 Family Pilocarpaceae Zahlbr. (1905)
           24 Family Porpidiaceae Hertel & Hafellner (1984) see Family Lecideaceae Chevall. (1826)
           25 Family Psoraceae Zahlbr. (1898)
           26 Family Ramalinaceae C.Agardh (1821)
           27 Family Rhizocarpaceae M. Choisy ex Hafellner (1984)
           28 Family Sphaerophoraceae Fr. (1831)
           29 Family Stereocaulaceae Chevall. (1826)