This is the first comprehensive identification manual for aquatic and riparian weeds west of the Rocky Mountains. This practical, easy-to-use guide covers 171 a

This encyclopedic yet easy-to-use 2-volume set covers 262 individual entries, including a full description of 451 species and another 361 plants compared as sim

The Clean Water Act (CWA) requires that wetlands be protected from degradation because of their important ecological functions including maintenance of high wat

"Revised and expanded to include the mid-Atlantic states."

If you oversee a lake, pond, or other aquatic environment—natural or man-made—this guide is for you! This easy-to-use reference manual and study guide cover