text: Betulaceae , or the Birch Family , includes six genera of deciduous nut-bearing trees and shrubs , including the birches , alders , hazels , hornbeams and hop-hornbeams , numbering about 130 species .
simplified: The birch family ( Betulaceae ) is a group of flowering plants of tree or shrub form that includes the birches , alders , hornbeams , and hazels .