: They frequently produce pendulous flower clusters (catkins), such as those seen on birch or oak trees.

The most iconic genus within this group is (Witch-hazel), though the subclass historically encompassed several other familiar trees and shrubs:

Hamamelid dicots were traditionally seen as a "primitive" group of flowering plants. They are often characterized by:

: Famous for blooming in late fall or late winter with ribbon-like yellow or orange petals.