Genus Pneumocystis P. Delanoë & Delanoë (1912)
   1 Pneumocystis carinii J.K. Frenkel (1999)
   2 Pneumocystis jirovecii Frenkel (1976)
   3 Pneumocystis wakefieldiae M.T. Cushion et al. (2004)
   4 Pneumocystis murina S.P. Keely et al. (2004)
   5 Pneumocystis oryctolagi E. Dei-Cas et al. (2006) - rabbit-associated Pneumocystis