Robinia hispida, also known as the bristly locust, is a flowering shrub native to North America. It produces showy, pinkish-purple flowers in late spring or early summer. The shrub is also characterized by its distinctive bristly stems and leaves. Synonyms for the bristly locust include "rose acacia" and "moss locust". The name "rose acacia" refers to the shrub's rose-like blooms, while "moss locust" describes the plant's moss-like appearance when covered in its bristly hairs. Other common names for Robinia hispida include "bristly-rose" and "hairy locust". Despite its attractive blooms, the bristly locust is considered an invasive species in some areas due to its rapid growth and tendency to spread aggressively.