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Identification Clues:
The most conspicuous characteristic
of this deciduous, slow growing tree is the pinnately compound leaf.
One leaf (see photo below) is composed of many leaflet pairs that arise
along a long central axis. The flowers are a cluster of drooping
catkins. The branches arise alternately from the trunk. The
fruit of the tree is a nut, each containing one seed.
Distribution: The
black walnut is one of the most valuable native trees. It is found
throughout the eastern part of the country, and in South Dakota is native
along the Big Sioux River.
Highlights: The
beauty and durability of the heartwood of the black walnut makes it highly
prized by carpenters. Other uses of its products include its bark
for tanning, nut husks for dye, and the nut for food. |