Useful Wild Plants of the United States and Canada

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. Works for complete scientific descriptions of the plants discussed: Gray's Manual of Botany of the Northern United States (east of the Rockies); Brit ton and Brown's Illustrated Flora of the United States and Canada (the same territory as covered by Gray); Small's Flora of the Southeastern United States; Watson's Botany of the Geological Survey of California; Coulter's' New Manual of Botany of the Central Rocky Mountains; Wootton and Standley's.