Black Locust
Robinia pseudoacacia · Fabaceae (Legume, pea, or bean family)
AI-generated identification · may be incorrect
Leaf Morphology
Leaf Type
Pinnately compound, deciduous leaf
Shape
Oblong to elliptical individual leaflets with rounded or notched tips
Margin
Entire (smooth edges on all leaflets)
Arrangement
Alternate arrangement on twigs, featuring compound leaves with numerous opposite or sub-opposite leaflets
Venation
Pinnate venation with a prominent central midrib and fine secondary veins branching out
Key Features
Pinnately compound leaves with entire, oval-to-oblong leaflets and rounded tips; paired stipular spines often present at the nodes on twigs; deeply furrowed dark bark; dangling clusters of fragrant white flowers
Description
Robinia pseudoacacia is a medium to large deciduous tree known for its deeply furrowed, dark bark, ofen twisting branches, and fragrant, pendulous clusters of white, pea-like flowers in spring. The compound leaves create a delicate, feathery canopy that provides light, dappled shade.
Habitat
Found in disturbed areas, open woodlands, forest edges, along roadsides, and railroad tracks; thrives in well-drained soils and full sun
Native Range
Native to the eastern United States, primarily the Appalachian and Ozark regions, but widely naturalized across North America, Europe, and Asia