Species (13.556)
- Otidea cantharella (Fr.) Quél. 1886
- Otidea cinerascens Velen. 1947
- Otidea formicarum Harmaja 2009
- Otidea flavidobrunneola Harmaja 2009
- Otidea daliensis W.Y. Zhuang & Korf 1989
- Otidea kaushalii (J. Moravec) K. Hansen & Olariaga 2015
- Otidea leporina (Batsch) Fuckel 1870
- Otidea tuomikoskii Harmaja 1976
- Otthia crataegi Fuckel 1872
- Otthia spiraeae (Fuckel) Fuckel 1870
- Ovularia duplex Sacc. 1880
- Pachydisca helotioides (W. Phillips) Boud. 1907
- Pachyella babingtonii (Berk.) Boud. 1907
- Pachyella clypeata (Schwein.) Le Gal 1953
- Pachyella coquandii (Donadini) Häffner & Schopfer 1992
- Pachyella lazzariana Trimbach 1991
- Pachyella subsqualida (Rehm) Boud. 1907
- Pachyphloeus citrinus Berk. & Broome 1846
- Pachyphloeus conglomeratus Berk. & Broome 1846
- Ostropa barbara (Fr.) Nannf. 1932
- Otidea apophysata (Cooke & W. Phillips) Sacc. 1889
- Otidea concinna (Pers.) Sacc. 1889
- Otidea minor (Boud.) Olariaga & K. Hansen 2015
- Otidea nannfeldtii Harmaja 2009
- Otidea papillata Harmaja 1976
- Otidea platyspora Nannf. 1966
- Otidea propinquata (P. Karst.) Harmaja 1976
- Otthia alni G. Winter 1871
- Otthia aceris G. Winter 1871
- Otthia helvetica (H. Wegelin) Scheinpflug 1958
- Otthia caespitosa (Niessl) E. Müll. 1962
- Otidea mirabilis Bolognini & Jamoni 2001
- Pachydisca brunnea (W. Phillips) Boud. 1907
- Pachydisca fulvidula Boud. 1907
- Pachydisca fusispora (J. Schröt.) Boud. 1907
- Pachyella peltata Pfister & Cand. 1981
- Pachyella punctispora Pfister 1974
- Pachyella aquatilis (Berthet & Donadini) Donadini 1979
- Pachyella rhizinoides (Rabenh.) Boud. 1907
- Pachyella pseudosuccosa (Le Gal) Pfister 1981
- Pachyphloeus ligericus Tul. & C. Tul. ex Berk. 1851
- Pachyphloeus melanoxanthus Tul. 1844
- Paecilomyces marquandii (Massee) S. Hughes 1951
- Paecilomyces penicillatus (Höhn.) Samson 1974
- Papulaspora sepedonioides Preuss 1851
- Paraconiothyrium fuckelii (Sacc.) Verkley & Gruyter 2012
- Paradidymella clarkii D. Hawksw. & Sivan. 1977
- Paraleptosphaeria macrospora (Thüm.) Gruyter, Aveskamp & Verkley 2012
- Paranectria affinis (Grev.) Sacc. 1878
- Oviascoma paludosum (Dennis) Y.J. Yao & Spooner 1996
- Ovularia asperifolii (Sacc.) Sacc. 1886
- Ovulinia azaleae F.A. Weiss 1940
- Pachydisca belonea (P. Crouan & H. Crouan) Boud. 1907
- Parascutellinia iuliana (Svr?ek) Svr?ek 1981
- Parascutellinia violacea (Velen.) Svr?ek 1975
- Ophiocordyceps unilateralis (Tul. & C. Tul.) Petch 1931
- Ophiognomonia leptostyla (Fr.) Sogonov 2008
- Ophiognomonia ischnostyla (Desm.) Sogonov 2008
- Ophiognomonia melanostyla (DC. : Fr.) Sacc. 1899
- Ophiostoma novo-ulmi Brasier 1991
- Ophiostoma polyporicola Constant. & Ryman 1989
- Ophiostoma piceae (Münch) Syd. & P. Syd. 1919
- Orbilia carpoboloides (P. Crouan & H. Crouan) Baral 1994
- Orbilia coccinella (Sommerf.) Fr. 1849
- Orbilia cejpii Velen. 1934
- Orbilia comma Graddon 1977
- Orbilia crenatomarginata (Höhn.) Sacc. & Trotter 1913
- Orbilia cryptocarpa Svr?ek 1986
- Orbilia corculispora Baral & G. Marson 2005
- Orbilia drepanispora Lindau 1903
- Orbilia epipora (Nyl.) P. Karst. 1870
- Orbilia euphorbiae (Henn.) Svr?ek 1974
- Orbilia exigua Velen. 1934
- Orbilia orientalis (Raitv.) Baral 1999
- Orbilia peltigerae (Fuckel) Sacc. 1889
- Orbilia naumburgensis Baral & E. Weber
- Orbilia phragmotricha Baral, E. Weber & L.G. Krieglst. 2007
- Orbilia terrestris Raitv. & Faizova 1983
- Orbilia tenebricosa (Svrcek) Baral 2006