^ 
HOP-HORNBEAN 
The little Hop-Hornbean (Ostrya virg iniana) can 
hardly be considered a shade tree, yet it does grow tall 
enough to become the most important tree in the understory 
of a mature woods. It will not be happy if the taller 
trees are cut, and it usually dies if it is left standing 
as a specimen after such clearing. It has a place in 
the understory of a natural border. The foliage is Elm- 
like and the red-tipped hop-like flower is quite inter- 
esting in early spring. The tree grows rather slowly, 
but may eventually reach twenty feet in height with a 
trunk diameter exceeding six inches. 
HORSE CHESTNUT 
The Horse Chestnuts (Aesculus Hippocastanuw) are not 
native, but they are showy, and on the whole, so satis- 
factory, that they can and should be used on streets, on 
parkways and lawns. While some of the varieties are not 
as vigorous, the species grows to be an immense tree; for 
this reason, it can not be used where the root develop- 
ment is likely to be restricted. The spring display of a 
large specimen, each branch tip carrying a large panicle 
of whitish flowers, is a sight never to be forgotten. A 
number of varieties are sometimes available from nurser- 
The double-flowered specimen {A. H. Baumanii) is of 
slower growth and more compact form. The Pyramidal type 
(4. H, pyranidalis) still not too well known, might be 
used for narrow streets or smaller gardens. The types 
with varigated foliage are usually not satisfactory in 
this territory. In addition, there is one proved hybrid 
known as the Red Horse Chestnut (J A. came a) , which pro- 
duces an abundance of pink flowers equally as large as 
the species. This tree tends to spread and would there- 
fore be limited to large gardens or lawns. Not many in- 
sects attack the Horse Chestnut exclusively, but aphids 
are sometimes troublesome. The branching habit is good 
and they can weather most of our storms without too much 
injury. Under the weight of sleet, the branches bend ana 
afterward, return almost to the original position without 
harm. 
LOCUST 
ommon name, we 
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have two distinct trees 
d in the Middle West fro» 
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