STREET TREES. ed 
The silver wattle’ is much like the black wattle except that its 
leaves and young branches are covered with a whitish down. 
AILANTHUS. 
The ailanthus,? or tree of heaven, is a tall, broad, handsome tree 
that is especially valuable in the heart of closely built or smoky 
cities. The staminate and pistillate flowers are borne on separate 
trees. Only the pistillate trees should be used, as the odor of the 
blossoms of the staminate ones is very objectionable for about 10 
days in late spring. These may be produced by grafting from pistil- 
late trees or by propagating from suckers or root cuttings from such 
trees if they have not been grafted. The ailanthus may not suc- 
ceed in regions 5 and 13. | 
ASH. 
There are three kinds of ash trees that are useful for street planting. 
The white ash * is a large oval-headed tree, reasonably satisfactory 
on rich lands in regions 1, 2, 3, 4, 9, 10, 11, and 12, but it is better 
adapted to suburban than urban conditions. 
The green ash ‘ is one of the few successful trees in regions 6, 7, 
and 8 and may succeed in region 5. It grows well throughout the 
remainder of the United States, but is of less value than other trees 
there. Itismuch smaller than the white ash, with a broad round top. 
The European ash ° is a large, handsome, round-headed tree suited 
to regions 1, 2, 3, and 4. | 
CAMPHOR. 
The camphor tree® is a large, handsome, oval-headed evergreen 
that will succeed in the southern half of region 2, in regions 3, 5, and 13, 
and in the warmer parts of region 12. It will endure more frost than 
the orange, and where it is successfully grown it is deservedly popular. 
CHINABERRY. 
The chinaberry,’ sometimes known as the China tree, is a small, 
round-headed, short-lived tree that will grow in regions 2, 3, 5, 8, 
11, 12, and 13 and near the southern edge of region 6. It is too short 
lived to be considered for planting where other trees will grow 
The umbrella tree,’ or Texas umbrella, is a small, compact form of 
the chinaberry with an umbrella-shaped top. It is useful for formal 
effects, as in the parking on a wide street where taller trees are used 
on the side. It will grow in regions 2, 3, 5, 8, 11, 12, and 13 and in 
the southern parts of region 6. 
1 Acacia decurrens dealbata F. Muell. > Frazinus excelsior L. 
2 Ailanthus altissima (Mill.) Swingle (A. glandu- 6 Cinnamomum camphora (L.) Nees and Eberm. 
losa Desf.). 7 Melia azedarach L. 
3 Frazinus americana L. 8 Melia azedarach umbraculiformis Berckmans and 
4 Frazinus lanceolata Borck. Bailey. 
