CONTENTS Acknowledgments PART I. About Invasive Plants--Definitions, Issues, History, and Management Options The Invasive Species Challenge Using This Book CHAPTER 1. The Aliens Landed Long Ago and Keep Arriving A definition and introduction to why, in some areas of wild America, over 70 percent of the plants are not natives but invited and uninvited immigrants. CHAPTER 2. Invasives Changing Wild America What immigrant plants have done to and for their new land. A brief survey of the major hot spots and critical problems. CHAPTER 3. Managing the Good, the Bad, and the Ugly A primer on the basic approaches to controlling and resolving problems, from prevention to eradication.

CHAPTER 4. A Quick Key to Identifying Major Species of Invasive Plant Groups A step-by-step guide in the familiar biology key format.PART II. Alert List. A Field Guide to Individual Species Terrestrial Plants Trees and Shrubs Evergreen Needles or inconspicuous leaves Alternate leaves Trees Shrubs Opposite or whorled leaves Trees Shrubs Vines Evergreen Alternate leaves Opposite leaves Deciduous Alternate leaves Opposite leaves Herbaceous Plants Rosette or basal leaves only Alternate leaves Leaves entire Leaves toothed or lobed Leaves divided Opposite or whorled leaves Leaves entire Leaves toothed Leaves divided Grasses and sedges Leaves angular in cross section (sedges) Leaves not angular (grasses) Plants form distinct clumps, usually over 2 ft. (0.6 m) tall Plants not in distinct clumps or growing along creeping stems Over 4 ft. (1.

2 m) tall Under 4 ft. (1.2m) tall Ferns Aquatic Plants Rosette only Alternate leaves Opposite or whorled leaves Other aquatic plants (ferns, grasses, irises) PART III. More information Bibliography Glossary Photo Credits Index.