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plish flowers. Across the transverse driveway to the 
north, and directly on the opposite side, may be found the 
pea family. Here are various species of the pea-tree: 
the pigmy pea-tree, from the Himalayan region; the Cham- 
lagu pea-tree, from China; the common pea-tree and the 
small-leaved pea-tree, both from Siberia. 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 and 
Kelsey’s locust, all from the southeastern United States; 
the woody bladder-senna, from Europe and the Orient; 
and the scorpion senna, from southern Europe. Immed- 
iately beyond is the rue family, illustrated by the shrubby 
trefoil (Pielea trifoliata) of the eastern United States; the 
prickly ash, from the northeastern United States, and 
Bunge’s prickly ash, from China, and the anise pepper 
tree, of the same genus, from China and Japan; and the tri- 
foliolate orange, from Japan, which has been used as one of 
the parents in the recent hybridization experiments by the 
U. S. Department of Agriculture in its effort to produce a 
more hardy orange; the lemon and forms of the orange may 
be found in the conservatories, together with other woody 
members of this family. The tanners’-tree family comes 
next with a single representative from Japan. Following 
this is the box family, represented by a number of forms 
of the box-tree, from Europe, Asia and Japan; the wood of 
the box-tree is highly prized for wood-engraving, on account 
of its hardness and close fine grain, and it takes a fine pol- 
ish. A few steps further on is the sumac family, to which 
belongs the common poison ivy, so frequent in and around 
New York City; here are the fragrant sumac, the mountain 
sumac and the smooth or scarlet sumac, all from the eastern 
United States; Osbeck’s sumac is a stately shrub from 
