How to Identify an Ash Tree

The recent posting, Emerald Ash Borer, highlighted the danger imposed on ash trees by the invasive Emerald Ash Borer. Of course, the ability to identify ash trees is a necessary prerequisite to identifying the Emerald Ash Borer.

Ash Tree Identification
Ash Tree Identification Guide
How to Identify Ash Trees 

How to Identify an Ash Tree, EAB & Signs of Infestation