control measures are being undertaken to control it and other similar species. In Victoria and NSW, Australia, Hawkweed Sp. are declared as State Prohibited Weeds and are controlled under The Bio Security Act 2015. Currently there are several eradication programs operating (often employing volunteers) to locate, prevent the spread of and eradicate any Pilosella (Hieracium) sp. plants. Joseph Pitton de Tournefort mentions that blades covered in this plant's juices were believed to cut through stone as easily as through wood. Phytochemistry The mouse-ear hawkweed contains umbelliferone, a compound similar to coumarin. The plant produces triterpenoids, mainly taraxasterol, but also the 4,4-dimethyl phytosterols alpha- and beta-amyrin, taraxerol, and fern-7en-3beta-ol. It has been used in folk medicine, and recreationally as a cannabis substitute. Image gallery References External links officinarum Flora of Asia Medicinal plants of Asia Medicinal plants of Europe Flora of Europe Plants described in 1753 Taxa named by Carl Linnaeus