xii Preface 



the woods often takes in personal fellowship with the 

 individual trees. He is not satisfied to pass through a 

 forest or a field as one might walk the streets of a crowded 

 city unacquainted. His mood is friendly ; therefore he 

 is pleased when by any chance he can know the trees as 

 friends, in their home life, intimately and by name. 



One has a similar feeling toward the humbler company 

 of the shrubs. 



As I undertook the pleasant work of introduction 

 between the many who have no technical botanical knowl- 

 edge and my friend the trees, now I do the same for 

 them and my friends the shrubs. 



III. 



The shrubs described in the following pages are those 

 which are found native in Canada and the United States 

 east of the Mississippi River and north of the latitude of 

 Southern Pennsylvania. With these are described the 

 more important of the introduced and naturalized species. 



The woody vines of the section are not included. 

 They are reserved for another volume. 



I am glad to acknowledge my obligations to Dr. 

 Thomas Morong, and again to Professor N. L. Britton 

 of Columbia College. Professor Britton has very kindly 

 revised the nomenclature of the shrubs. For the localities 

 I have chiefly followed Gray and Wood. I am indebted 

 also to the works of Torrey, Emerson, Millspaugh, 

 Meehan, and others. 



