Trees for Shade and Ornament 207 
the best known and tested, and a few less known but com- 
mendable ones 
To become acquainted with such a large amount of 
material some kind of classification is desirable. Since, from 
the ornamental point of view, the character of the foliage is 
a more important consideration than the fruit (although the 
latter is used in botanical classification), it has seemed desir- 
able to make it the basis for sequence in our enumeration. 
The trees with needle-shaped leaves coincide with the 
botanical family of conifers, and we have grouped them 
under common generic or family names in alphabetical 
sequence. 
The broad-leaf trees could be grouped, from the orna- 
mental point of view, under trees with simple leaves, and 
those with compound leaves, and each of these two groups 
might be again, with less precision, grouped into large-leaved 
and small-leaved trees. Size, to be sure, can only be a 
relative measure, in a general way accentuating the relative 
leaf-value of the different groups, and the impression of 
coarser or finer effects of foliage. Since, however, many 
genera contain species with large and small leaves, which 
would require that they be separated and much of the infor- 
mation duplicated, we have preferred to restrict the classi- 
fication into those with compound and those with simple 
leaves and give under each a list in alphabetical order of 
the genera by Latin names with cross references from the 
common names; discussing under the genus points of sim- 
ilarity in ornamental value, the characteristics and require- 
ments which are in common; and giving under the species 
only the distinctive features. 
The buyer of plant material from nurseries will find great 
variation in the names given to various trees in different 
catalogues; indeed, even the botanists have not yet come to 
