Robinia pseudoacacia, commonly known as the black locust or false acacia, is a deciduous tree native to North America. It's a popular ornamental tree due to its fragrant white flowers and feathery foliage.
The leaves of Robinia pseudoacacia are compound, meaning they're composed of multiple leaflets arranged along a central stem. These leaflets are typically oval-shaped with a pointed tip and finely serrated edges. They're usually a bright green color, but can turn yellow in autumn before falling.
One of the distinctive features of the black locust's leaves is their ability to fold up at night or in response to touch. This phenomenon, known as nyctinasty or thigmonasty, is a defense mechanism that helps to conserve moisture and protect against predators.
While the black locust is a beautiful and beneficial tree, it's important to note that it can be invasive in some areas. Its seeds are easily dispersed by birds and other animals, and it can outcompete native plants for resources. As such, it's crucial to consider the potential ecological impacts before planting black locust trees.
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