The Fabaceae is one of the most ecologically, economically, and agriculturally important plant families in the world. These plants are particularly significant in Arizona as many species are native and adapted to arid lands. Desert-adapted plants will become increasingly important as water issues of the state become more critical. Additionally, legumes are important and sometimes dominant components of the many biotic communities in Arizona. This manual meets a critical need for a reference on these plants in Arizona.

Because this flora describes all legume taxa in Arizona, including those that are commonly cultivated, it is truly a comprehensive resource. All genera, including cultivated only genera, are included in one key, to simplify identification for users who may encounter cultivated plants as well as native and naturalized plants.

Another unique feature of the flora is the inclusion of information on cultivation, landscaping potential, ethnobotany, and current uses. As a result, this flora will serve as a guide for informed selection of legume plants with the greatest potential for success in a variety of projects. Projects might include landscaping, habitat improvement, revegetation, and bioprospecting.