The flower genus ROSA is a large and diverse group of plants in the Rosaceae family. It includes over 100 species of shrubs, vines, and trees that are native to temperate regions around the world. The most well-known species of this genus is the rose, which is widely cultivated for its showy flowers and fragrant scent. Other popular species of the ROSA genus include the rambler rose, the sweetbriar rose, and the dog rose.