Cirsium rivulare is a beautiful flowering plant native to Europe. It is commonly known as the Brook thistle. It belongs to the family Asteraceae and is a perennial plant that grows up to 3-5 feet in height. The Brook thistle is known for its pretty pink-purple flowers that bloom in the summer months. This plant is often used in gardens and landscaping due to its attractive appearance. In terms of synonyms, Brook thistle is also commonly referred to as the Meadow thistle or the Stream thistle, due to its preference for moist soils by brooks and streams. Its scientific name, Cirsium rivulare, is also sometimes shortened to C. rivulare.