vi PREFACE 



gogical standpoint, he has felt the need of a systematic classification, 

 based upon the association of ideas which would aid in remenibering 

 and grouping plants. Through learning to know plants by their 

 group associations a comprehensive knowledge of them may be gath- 

 ered and retained with little effort. One of the easiest ways of memo- 

 rizing is through the association of ideas. This is the fundamental 

 principle upon which the information in the various groups is based. 

 The same condition has been found in office work. Men with the 

 greatest range of knowledge covering the identification of plants and 

 the botanical classification of plants have found a smaller book of 

 this kind indispensable as a ready reminder of the possibilities of plant 

 uses, when working out planting designs. 



The first abridged edition of this book was published in 1916, 

 primarily for the use of the author and a few of his friends in pro- 

 fessional work. It was largely local in character. It has met with 

 such a favourable reception, however, and so many requests have been 

 received asking that a book of this kind be continued, and that the field 

 be covered by comprehensive information, that this revised edition is 

 the result. 



Object of This Book. It is hoped that this book will serve as a 

 ready reference to those who have no authoritative source of informa- 

 tion, and whose limited opportunity and limited time for observation 

 have not enabled them to become familiar with a wide range of materials, 

 and to keep familiar with it. This information is not compiled for the 

 purpose of taking the place of the services of a professional landscape 

 architect, where the problem is of sufficient magnitude to justify his 

 employment. This book will assist those who, having no available 

 sources of reliable information at hand, are prone to accept the advice 

 of "landscape quacks" and self-styled landscape architects with little 

 training. 



The question is often asked, "What plants can I use for a specific 

 purpose?" This is asked by both professional landscape architects 

 and by owners of properties. This book will place at the disposal of 

 such persons a list of plants from which species and varieties may be 

 selected advisedly. 



The discussion does not by any means represent a complete study 

 of this subject. It will take years of checking, verification, and 

 criticism, before a compact compilation of this material can be put into 



