DIRECTIONS. 



NOTE i. The place of any given specimen can be 

 readily found by help of one or more of the three 

 " Guides " given on pages 19 to 32. 



The first Guide is arranged for use with the flowers ; 

 the second, with the leaves ; the third, with the fruit. 

 Which of the three can be used to the best advantage 

 will depend upon the time of year. 



The descriptions are scientific but not technical. 



NOTE 2. In describing a species, the general items 

 that have been given under the genus or the family to 

 which the species belongs are not usually repeated. 



NOTE 3. In using the Leaf Guide and the leaf illustra- 

 tions it should be remembered that leaves from vigorous 

 young sprouts are not usually the best specimens. It 

 is seldom that two leaves, even upon the same mature 

 plant, exactly agree, but they follow the type, while often 

 the younger growth varies from it. 



NOTE 4. Those species are considered shrubs (in dis- 

 tinction from trees) which, as the rule, do not spring from 

 the ground with a single branching trunk. 



NOTE 5. Signs used : A grave accent (>) over a vowel 

 indicates that it is accented and long. An acute accent 

 (') over a vowel indicates that it is accented and short. 



Names enclosed in brackets indicate that the shrub is 

 not native. 



17 



