Plant
- Large tree
- Deciduous
- Numerous species
Twig
- Alternate leaf arrangement
Leaf
- 2½-6" long
- Lobed and / or toothed
- Vary by species
Flower
- Green or yellow-brown catkins
- Not showy
Fruit
- ¾-1½" long nut
- Round to ovoid
- Tan or brown, with distinct cap
- Vary by species
