Juncus inflexus, commonly known as the hard rush or blue rush, is a perennial grass-like plant that is native to Europe, Asia, and North Africa. It is typically found growing in wetlands, stream banks, and other areas with moist soil. There are several synonyms for Juncus inflexus, including Juncus tenuis, Juncus stereophyllus, and Juncus acutus. These plants can be easily identified by their thin, wiry stems and bluish-green leaves. They are often used in horticulture and landscaping to add texture and interest to wetland areas, and to help prevent soil erosion. Overall, Juncus inflexus and its synonyms are fascinating and important plants that play a crucial role in the ecosystem.