Black Locust
![Photo by Paul Beck](form.jpg)
![Photo by Paul Beck](leaf.jpg)
Black locust is one of several trees with pinnately compound leaves and leaflets with smooth margins.
![](flower.jpg)
![](twig.jpg)
![Photo by Paul Beck](thorn.jpg)
The best year-round diagnostic feature is the pair of thorns that occur as the leaf nodes. Prickly ash has similar looking thorns, but is a small multi-stemmed shrub.
![Photo by Paul Beck](bark.jpg)
![](fruit.jpg)
![](fall.jpg)
![](bud.jpg)