Species (13.556)
- Keinstirschia megalosperma (Kirschst.) J. Reid & C. Booth 1989
- Keissleriella alpina S.K. Bose 1961
- Keissleriella cladophila (Niessl) Corbaz 1957
- Keissleriella caudata (E. Müll.) Corbaz 1957
- Keissleriella bavarica Butin 1981
- Keissleriella ocellata (Niessl) S.K. Bose 1961
- Keissleriella quadriseptata Kaz. Tanaka & K. Hiray. 2015
- Kernia cauquensis Calviello 1979
- Kernia nitida (Sacc.) Nieuwl. 1916
- Kirschsteinia polyspora (Kirschst.) Syd. & P. Syd 1906
- Kirschsteiniothelia aethiops (Berk. & M.A. Curtis) D. Hawksw. 1985
- Klasterskya acuum (Mouton) Petr. 1940
- Kirschsteiniothelia thujina (Peck) D. Hawksw. 1985
- Keissleriella sambucina (Rehm) Höhn. 1919
- Kolletes undulatus Kohlm. & Volkm.-Kohlm. 2005
- Korfia tsugae (E.K. Cash & R.W. Davidson) J. Reid & Cain 1963
- Kriegeriella mirabilis Höhn. 1918
- Kriegeriella transiens Höhn. 1918
- Kubickia tatrensis Svr?ek 1957
- Laboulbenia brachiata Thaxt. 1892
- Laboulbenia buehlmannii Poelt 1952
- Laboulbenia elongata Thaxt. 1892
- Laboulbenia parvula Thaxt. 1893
- Laboulbenia pedicellata Thaxt. 1892
- Laboulbenia proliferans Thaxt. 1893
- Laboulbenia flagellata Peyr. 1873
- Laboulbenia pterostichi Thaxt. 1893
- Iodophanus carneus (Pers. : Fr.) Korf 1967
- Intralichen lichenum (Diederich) D. Hawksw. 2002
- Iodophanus sarcobius (Boud.) Kimbr. 1969
- Iodophanus verrucosporus (P.W. Graff) Kimbr., Luck-Allen & Cain 1969
- Iodosphaeria tarda (Fuckel) M.E. Barr 1996
- Iodophanus testaceus (Mougeot) Korf 1967
- Jahnula aquatica (Kirschst.) Kirschst. 1936
- Jattaea microtheca (Cooke & Ellis) Berl. 1900
- Jattaea discreta (Berl.) Réblová 2011
- Jobellisia saliciluticola P. Leroy 2006
- Jattaea villosa (Nitschke) L. Mostert 2006
- Jugulospora rotula (Cooke) N. Lundq. 1972
- Julella tulasnei (P. Crouan & H. Crouan) Berl. & Voglino 1886
- Julella macrospora Döbbeler 1978
- Julella phycophila Döbbeler 1978
- Kabatia cucubali Buchalo 1961
- Kabatia periclymeni (Desm.) M. Morelet 1975
- Kabatia latemarensis Bubák 1904
- Kabatina thujae R. Schneid. & Arx 1966
- Kalmusia coniothyrium (Fuckel) L. Huhndorf 1992
- Kalmusia sarothamni Feltgen 1901
- Kalmusia ebuli Niessl 1872
- Karstenia gregaria Graddon 1986
- Karstenella vernalis Harmaja 1969
- Kabatia silenes Lobik 1928
- Karstenia idaei (Fuckel) Sherwood 1977
- Intralichen christiansenii (D. Hawksw.) D. Hawksw. & M. Cole 2002
- Intralichen baccisporus D. Hawksw. & M.S. Cole 2002
- Intralichen lichenicola (M.S. Christ. & D. Hawksw.) D. Hawksw. & M.S. Cole
- Ionomidotis fulvotingens (Berk. & M.A. Curtis) E.K. Cash 1939
- Ionomidotis irregularis (Schwein.) E.J. Durand 1923
- Iridinea iridina Velen. 1934
- Isaria farinosa (Dicks.) Fr. 1832
- Isothea rhytismoides (Bab.) Fr. 1849
- Karschia talcophila (Ach. ex Flot.) Körb. 1965
- Keissleriella gallica (E. Müll.) S.K. Bose 1961
- Keissleriella subalpina (Rehm) S.K. Bose 1961
- Kohninia linnaeicola Holst-Jensen, Vralstad & T. Schumach. 2004
- Kotlabaea aurantiaca (Bres.) Benkert 2008
- Kotlabaea danuviana Benkert 2008
- Kotlabaea deformis (P. Karst.) Svr?ek 1969
- Kotlabaea delectans (Starbäck) Svr?ek 1974
- Kotlabaea macrospora Benkert 1993
- Kotlabaea trondii Benkert & Kristiansen 1999
- Kreiseliella typhae (Vasyag.) U. Braun 1991
- Kriegeriella minuta (M.E. Barr) Arx & E. Müll. 1975
- Laboulbenia clivinalis Thaxt. 1899
- Laboulbenia cristata Thaxt. 1893
- Laboulbenia elaphri Speg. 1915
- Laboulbenia filifera Thaxt. 1893
- Laboulbenia subterranea Thaxt. 1893
- Labyrinthomyces donkii Malençon 1973
- Laboulbenia rougetii Mont. & C.P. Robin 1853
- Laboulbenia vulgaris Peyr. 1873
- Jafnea semitosta (Berk. & M.A. Curtis) Korf 1960
- Karstenia macer (P. Karst.) Sherwood 1980
- Karsteniomyces peltigerae (P. Karst.) D. Hawksw. 1980
- Karstenia sorbina (P. Karst.) P. Karst. 1885
- Karsteniomyces tuberculosus Alstrup & D. Hawksw. 1990
- Karstenula hirta (Fr.) Höhn. 1920
- Karstenula philadelphi Oudem. 1889
- Karstenula rhodostoma (Alb. & Schwein. : Fr.) Speg. 1879
- Karstenula shepherdiae (Peck) M.E. Barr 1986
- Karstenia lonicerae (Velen.) Sherwood 1977
- Karstenula varians Sacc. 1883
- Keissleriella hyalinospora (Kirschst.) E. Müll. 1962
- Keissleriella genistae (Fuckel) E. Müll. 1962
- Keissleriella culmifida (P. Karst.) S.K. Bose 1961
- Keissleriella pinicola D. Hawksw. & Sivan. 1975
- Lachnellula juniperina (K. Holm & L. Holm) Vesterh. 1996
- Lachnellula hyalina Dharne 1965
- Lachnellula kamtschatica Raitv. 1970