Alnus - Alders
Betula - Birches
Betulaceae, or the Birch Family, includes two genera of trees and shrubs, the birches and the alders. The family is often treated as also including the Corylaceae: hazels, hornbeams and hop-hornbeams.
Example species of the two genera are:
External link
Kew checklist - Fagales
Betulaceae - Corylaceae - Fagaceae - Ticodendraceae - Casuarinaceae - Juglandaceae - Rhoipteleaceae - Myricaceae