PREFACE 



THIS Flora of the Pacific States has been made to enable 

 pupils to obtain a clear idea of the method of classifying 

 plants through practical experience in identifying the most 

 common genera and species of the coast. It is to serve as a 

 guide in understanding the characteristics and relationships 

 of large and important orders and genera, and, to some 

 extent, in identifying species. 



The species included have been those most widely dis- 

 tributed or those most abundant near large centers of popula- 

 tion, so that sufficient material might easily be obtained for 

 class study. Species not clearly and easily defined have been 

 omitted even when abundant, so as to render the possibility 

 of error as little as possible. Where a difference of opinion 

 exists among botanists in regard to generic names, both have 

 generally been given, one in parentheses. 



Teachers will find, in whatever part of the Pacific States 

 they may be, that they can collect a sufficient number of the 

 plants here included to afford their pupils all the drill neces- 

 sary. It is advised that the teachers furnish the plants for 

 class study, being careful to select only from those here 

 included rather than to allow the pupils themselves to select 

 at random from the flora of the neighborhood ; otherwise, the 

 pupil is likely to become discouraged by failure in identifying 

 plants not described in the book. 



