root › cellular organisms › Eukaryota › Opisthokonta › Fungi › Dikarya › Ascomycota › saccharomyceta › Pezizomycotina › leotiomyceta › sordariomyceta › Sordariomycetes › Sordariomycetidae › Ophiostomatales › Ophiostomataceae › Ophiostoma › Ophiostoma novo-ulmi › Ophiostoma novo-ulmi subsp. novo-ulmi