Trees can also be identified by the number and arrangement of leaves. Broadleaf plants have leaves that are arranged in one of four groups:

	SIMPLE - A simple leaf is attached to the twig with only one leaf attached to the petiole, such as the dogwood.
	PALMATELY COMPOUND - A palmately compound leaf, such as the buckeye, has several leaflets attached to the same point on the same petiole.
	PINNATELY-COMPOUND - A pinnately compound leaf is where several leaflets are attached at different points on the leaf. An example of this would be the honey locust tree or the mimosa.
	DOUBLE-PINNATELY COMPOUND - A less common leaf type is the double-pinnately compound leaf, where each leaflet is divided into several parts.

Tree Identification
[Needle type][Leaf arrangment][Leaf type][Leaf shape][Leaf margin]
Example tree key

Last modified July 30, 1999