| Common Names - | Synonyms - |
| Authority - Mirbel | Total Number of genera - 1 |
| Gymnosperm or Angiosperm? - Angiosperm | Total Number of species - 15 |
| Plant forms - Tree/Shrub | |
| World Distribution - Widespread North temperate. | |
| Comments - See Betulaceae. One genus: Corylus. n the past, the family was often divided into two families, Betulaceae (Alnus, Betula) and Corylaceae (the rest); however, recent treatments, including the Angiosperm Phylogeny Group, have renamed these two groups as subfamilies within the Betulaceae- Betuloideae and Coryloideae. | |