Rubinia is a genus of flowering plants in the legume family, known for its ornamental value and ability to fix nitrogen in the soil. These trees and shrubs are native to the Americas and are often used in landscaping due to their attractive foliage and flowers. One of the most well-known species is Robinia pseudoacacia, commonly called the black locust. This tree is recognized for its fragrant white flowers and durable wood, making it popular for various uses, including furniture and fence posts. Rubinia species are also beneficial for improving soil health in disturbed areas.