This classic work, the most comprehensive and useful book on the common weeds of the Northern United States and Canada, can now be used with the confidence that its scientific names are accurate and the common names are actually the most commonly used names... The drawings of 331 of the 571 weed taxa covered by this book remain, for many, the most useful feature in identifying weeds... A valubale, if not indispensable tool for gardeners, farmers, nursery people, county agents, botanists, or anyone else who spends consierable time dealing with weeds. - Baileya "A classic." - American Scientist The late Walter Conrad Muenscher was Professor of Botany at Cornell University for many years. Peter A. Hyypio is curator of the Herbarium and Extension Botanist, L.H. Bailey Hortorium, New York State College of Agriculture and Life Sciences, Cornell University.