Ascomycota, subdivision Ascomycota, Ascomycotina, subdivision Ascomycotina - a large subdivision of Eumycota including Hemiascomycetes and Plectomycetes and Pyrenomycetes and Discomycetes; sac fungi; in some classification systems considered a division of the kingdom Fungi --1is a kind ofdivision --1is a member of Eumycota, division Eumycota --1has members: