刺槐又名洋槐，是原生于北美洲的一个树种，但现在被广泛引种到亚洲、欧洲等地。

刺槐可以长到高达27米，树干直径到1.6米，树皮厚，暗色，纹裂多；树叶长25厘米，羽状复叶，由9-19个小叶组成，每个树叶根部有一对1-2毫米长的刺；花为白色，有香味，穗状花序；果实为荚果，每个果荚中有4-10粒种子。刺槐树叶类似槐树，但叶比较薄，半透明，有刺，花色不同，是两者的主要区别。

Robinia pseudoacacia, also known in its native territory as black locust, is a tree of the genus Robinia in the subfamily Faboideae of the pea family Fabaceae. It is native to the southeastern United States, but has been widely planted and naturalized elsewhere in temperate North America, Europe, Southern Africa and Asia and is considered an invasive species in some areas. Another common name is false acacia, a literal translation of the specific name. It was introduced into Britain in 1636.