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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, whence its common name. 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, 



