Commercial value: The wood is not durable and is not used commercially.

Other characters: The _flowers_ appear in large white clusters in May
and June. The _fruit_ is large, round, and prickly.

[Illustration: FIG. 21.--Leaf of the Horsechestnut.]

Comparisons: The _red horsechestnut_ differs from this tree in having
red flowers. The _buckeye_ is similar to the horsechestnut, but its
bud is not sticky and is of a lighter gray color, while the leaf
generally has only five leaflets.


THE WHITE ASH (_Fraxinus americana_)

Distinguishing characters: The terminal *twigs* of glossy olive green
color are *flattened* below the bud. Fig. 22. The bud is
rusty-brown.

[Illustration: FIG. 22.--Twig of White Ash.]

Leaf: Five to nine leaflets. Fig. 23.

Form and size: A large tree with a straight trunk.

Range: Eastern North America.

Soil and location: Rich, moist soil.

Enemies: In cities it is very often attacked by sucking insects.