Medicago Echinus, also known as spiny medick or spiny alfalfa, is a common species of flowering plant found in North America. This plant belongs to the legume family and is known for its medicinal properties. There are several synonyms for Medicago Echinus, including Medicago spinosa, Medicago aurita, and Medicago hispida. Each of these synonyms refers to different features of the plant, such as its spiky leaves or its hairy stems. Despite their different names, these synonyms all represent the same species of plant. Medicago Echinus is used in herbal medicine to treat a variety of ailments, including respiratory issues and digestive problems.