How to Identify American Chestnut Trees

There are several different types of chestnut trees and they can occasionally get confusing. Between the American, Chinese, Horse and Japanese chestnut trees, identification can be difficult. However, if you take the time to look at the details, an American chestnut tree is fairly easy to identify and classify. The leaves, nuts and stems make the American chestnut a one-of-a-kind tree.

Difficulty: Moderate

Instructions

1. Look at the leaf very closely. The leaf of the American chestnut tree is the only one whose "teeth" along the edges are curved into hooks. The other chestnut trees have smaller teeth with no hooks. The American chestnut leaf is also generally longer and thinner than that of other chestnut trees. The Chinese chestnut tree, most often confused with the American chestnut, has a wider leaf that is thick and waxy to the touch.

2. The chestnut of the American chestnut tree is smaller than the others and has a slightly hairy look---small white hairs cover roughly half of the surface. The burrs that house the chestnuts are densely covered with spines that are longer, at 2 to 3 cm, and more slender that on the chestnuts of the other trees. The Chinese chestnut spines are only 1 to 2 cm long and are sparse in comparison.

3. Look at the stems and leaf buds. The stems of the American chestnut are reddish brown and hairless. There are many but very small white spots, or lenticels, on the stem. The buds are pointed and grow away from the stem.

Tips & Warnings

• If you find that your Chestnut tree is difficult to identify through normal means, it may in fact be a hybrid. If this is the case, simple observation of the tree will not help you determine the type of chestnut. If you are familiar with other chestnuts in your area, you may be able to determine if it's a hybrid without the hassle of sending it for professional examination.

References

• Chestnut information
• Hybrid and Identification of Chestnut