PLANTING 147 



groups may also be divided according to the de- 

 ciduous and the evergreen members; these are 

 further subdivided into regular and irregular 

 classes. 



Shrubs are often selected for their quality, by 

 which is meant the degree of refinement of their 

 appearance. According to their quality they are 

 divided into three classes : the high class, or named 

 varieties ; the medium ; and the coarse. An exam- 

 ple of a high-class shrub would be the rhododen- 

 dron. Bush-honeysuckle or mock-orange is a 

 medium class, and the Hydrangea paniculata 

 grandiflora is an example of the coarse species. 



The quality of a shrub will often suggest its use. 

 A marble building, such as a museum, a memorial, 

 or a library demands the use of first-quality 

 shrubs. They are decidedly fitting for use amid 

 monumental surroundings. The second-quality 

 shrubs can be used to advantage in most planting 

 schemes, while the coarser varieties will not ap- 

 pear out of place in the meanest surroundings. 

 Where coarse varieties predominate, shrubs of 

 medium quality may be used for accent ; and where 

 medium-class shrubs predominate, the high-class 

 shrubs may be used as accent. 



For any planting scheme which has high-class 



