Contains 2 genera and 6 accepted taxa overall.
This family is completely databased for all specimens.
[Family identification key]
1. Leaf blade ovate to ovate-oblong, usually widest below the middle; inflorescence with mostly unisexual flowers, a few bisexual; fruit nut-like
1. Leaf blade narrowly ovate to rhombic-elliptic, usually widest near the middle; inflorescence with bisexual flowers; fruit a samara