What features make Juglandaceae different from most other Fagales families?

Within the Fagales order, the family Juglandaceae is distinguished by several unique morphological features that set it apart from most other members of the group:

• Leaf Structure: While most families in the order possess simple leaves, members of Juglandaceae are characterized by pinnately compound leaves, which are sometimes trifoliolate.1
• Aromatic Glands: The vegetative parts of these plants are covered with aromatic, umbrella-shaped (peltate) glands.1
• Wood Characteristics: The wood of this family is particularly noted for its distinct grain patterns and the luster of its wood rays, which radiate toward the perimeter of the trunk.1

These features contrast with the general description of the order, which typically consists of trees or shrubs with simple, alternately arranged leaves. While Juglandaceae shares the order's common trait of producing unisexual flowers—often arranged in catkins—these specific vegetative and anatomical traits make the family unusual within the broader context of Fagales.1