This book contains a key for the identification of the gymnosperms of the United States and Canada relying as much as possible on stem, leaf and cone characters

This second volume of the magnificent compendium exhaustively describes and classifys the ferns, fern allies, and gymnosperms of North America. Covering over tw

This book offers a global synthesis of gymnosperm families, fossil and extant, providing a new and distinctive perspective on the macroevolutionary biodiversity

Toxic Plants of North America, Second Edition is an up-to-date, comprehensive reference for both wild and cultivated toxic plants on the North American continen

Excerpt from Textbook of Botany: There are such wide differences of opinion regarding the proper content of an elementary course in botany that no teacher would