from the black locust by the differences in their bark. In the honey
locust the bark is not ridged, has a sort of dark iron-gray color
and is often covered with clusters of stout, sharp-pointed thorns as
in Fig. 83. The fruit is a large pod often remaining on the tree
through the winter. This tree has an ornamental, but no commercial
value.

[Illustration: FIG. 83.--Bark of the Honey Locust.]


HARDY CATALPA (_Catalpa speciosa_)

Distinguishing characters: The tree may be told by its *fruit*, which
hang in long slender pods all winter. The leaf-scars appear on the
stem in whorls of three and rarely opposite each other.

Form and size: The catalpa has a short, thick and twisted trunk with an
irregular head.

Range: Central and eastern United States.

[Illustration: FIG. 84.--Hardy Catalpa Trees.]

[Illustration: FIG. 85.--Bark of the Flowering Dogwood.]

Soil and location: It grows naturally on low bottom-lands but will also
do well in poor, dry soils.

Enemies: Practically free from disease and insects.