Fagales contains full checklists of important, mainly temperate genera such as Alnus (alders), Betula (birches), Corylaceae (hornbeams), Corylus(hazels), Castanea (chestnuts), Fagus (northern beeches), Nothofagus (southern beeches), and Quercus (oaks), describing 531 species, their growth patterns, distribution and conservation status.