INDEX A B C D E F G H I J K L M N O P Q R S T U V W X Y Z



Trees of Iowa: An Interactive Key

Definitions of Special Terms for Identification

 
Simple Leaf

Simple Leaf
- leaves have one blade
Compound Leaf

Compound Leaf
- leaves have several individual leaflets
Palmately Compound

Palmately Compound
Pinnately Compound

Pinnately Compound
Doubly Pinately Compound

Doubly Pinately Compound
Alternate Leaves

Alternate Leaves
Leaf Margin Smooth

Leaf Margin Smooth
Leaf Margin Lobed

Leaf Margin Lobed
Leaf Margin Toothed

Leaf Margin Toothed
Leaf Margin Doubly Toothed

Leaf Margin Doubly Toothed
Leaf Margin Lobed and Toothed


Leaf Margin Lobed and Toothed
Lobe Sinuses Sharp

Lobe Sinuses Sharp
Lobe Sinuses Rounded

Lobe Sinuses Rounded
Single Samaras - small winged seeds

Single Samaras -
small winged seeds
Double Samaras

Double Samaras
Twig Cross-Section

Twig Cross-Section