The Fagales are an order of flowering plants, including some of the best known trees. They belong among the rosid group of dicotyledons. The following families are typically included here:
In the older Cronquist system
, these plants were split into three different orders, placed among the Hamamelidae. The Casuarinales comprised the single family Casuarinaceae, the Juglandales comprised the Juglandaceae and Rhoipteleaceae, and the Myricales comprised the remaining forms (plus Belanops
). The change is due to studies suggesting that the Myricales, so defined, are paraphyletic
to the other two groups.