hamamelid dicot family - family of mostly woody dicotyledonous flowering plants with flowers often unisexual and often borne in catkins

Fagales, order Fagales - an order of dicotyledonous trees of the subclass Hamamelidae

Betula, genus Betula - a genus of trees of the family Betulaceae (such as birches)

Alnus, genus Alnus - alders

Carpinaceae, family Carpinaceae, subfamily Carpinaceae - used in some classification systems for the genera Carpinus; Ostryopsis; and Ostryopsis

Carpinus, genus Carpinus - mostly deciduous monoecious trees or shrubs: hornbeams; sometimes placed in subfamily Carpinaceae

genus Ostrya, Ostrya - deciduous monoecious trees of Europe and Asia and America; sometimes placed in subfamily or family Carpinaceae

genus Ostryopsis, Ostryopsis - deciduous monoecious shrubs of China and Mongolia resembling trees of the genus Ostrya; sometimes placed in subfamily or family Carpinaceae

Corylaceae, family Corylaceae, subfamily Corylaceae - used in some classification systems for the genus Corylus

Corylus, genus Corylus - deciduous monoecious nut-bearing shrubs of small trees: hazel; sometimes placed in the subfamily or family Corylaceae