Extension Forestry

Definitions of Special Terms for Identification

Simple Leaf - leaves have one blade

Compound Leaf - leaves have several individual leaflets

Palmately Compound

Pinnately Compound

Doubly Pinately Compound

Alternate Leaves

Leaf Margin Smooth

Leaf Margin Lobed

Leaf Margin Toothed

Leaf Margin Doubly Toothed

Leaf Margin Lobed and Toothed

Lobe Sinuses Sharp

Lobe Sinuses Rounded

Single Samaras - small winged seeds

Double Samaras

Twig Cross-Section

ISU Extension Tree Identification Page - ISU Forestry Extension - ISU Extension

Contact: Paul Wray
Last Update: December 1996