Cirsium eriophorum, commonly known as woolly thistle or hairy thistle, is a plant species belonging to the family Asteraceae. It is native to Europe and western Asia and has been introduced to other parts of the world. Synonyms for this species include Carduus eriophorus, Cirsium acaulon and Cnicus eriophorus. The woolly thistle has a tall stem and large, spiny leaves with woolly white hairs. It is often cultivated for its beauty and as a source of nectar and pollen for bees and other insects. The plant is also used in traditional medicine for its anti-inflammatory properties and to treat digestive and respiratory ailments.