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illustrating the plum family, to which belong the plums, 
cherries, apricots, and peaches. As many of the species of 
this family are trees they will be found at the arboretum. 
Among those represented here are the western sand cherry, 
of northwestern North America; the three-lobed peach, a 
native of China, with its double-flowered form; the dwarf 
peach, from Europe; and the Russian almond, of Russia 
and western Asia. 
Crossing the driveway to the west, the sequence is again 
taken up on the ground overlooking the west lake, with the 
senna family, represented by the Asiatic Judas-tree, of China 
and Japan, and the American Judas-tree of the eastern United 
States; in spring, before the appearance of the leaves, these 
are profusely covered with pink or purplish flowers. Across 
the transverse driveway to the north, and directly on the 
opposite side, will be found the pea family. Here are various 
species of the pea-tree: the pigmy pea-tree, from the Him- 
alayan region; the Chamlagu pea-tree, from China; the com- 
mon pea-tree and the small-leaved pea-tree, both from Siberia. 
In the fall the two-colored bush-clover, from China, is a show 
of purple bloom. The white broom, the common broom, and 
the dense-flowered broom, all of Europe, have representatives 
here; of these, the common broom, in Spain and France 
attains the size of a small tree, and its wood is highly prized 
for veneering and cabinet work; its branches are extensively 
employed for making brooms, whenceits commonname. Other 
plants of interest are the false indigo and the bristly locust, 
both from the southeastern United States ; the woody bladder- 
senna, from Europe and the Orient; and the scorpion senna, 
from southern Europe. Immediately beyond is the rue family, 
illustrated by the shrubby trefoil (Ptelea trifoliata) of the 
eastern United States; the prickly ash, from the northeastern 
United States; and the trifoliolate orange, from Japan, which 
has been used as one of the parents in the recent hybridiza- 
tion experiments by the U. S. Department of Agriculture in 
its effort to produce a more hardy orange; the lemon and 
forms of the orange will be found at the conservatories, 
