Taxonomic name:Cirsium vulgare (Savi) Ten. Synonyms:Carduus lanceolatus L., Carduus vulgaris Savi, Cirsium lanceolatum (L.) Scop., non Hill, Cirsium lanceolatum var. hypoleucum DC. Common names: black thistle (English), bull thistle (English), chardon (French), cirse commun (French), Scotch thistle (English), spear thistle (English) Organism type: herb
Cirsium vulgare is a herbaceous biennial from the Asteraceae family. It can reach a height of 40 to 120 cm. Originally from Europe, Asia and North Africa, it has spread to virtually all temperate regions of the world. This grass tolerates a wide variety of soil types and levels of moisture. It can be abundant in areas where the soil has been disturbed, such as along roadsides and riverbanks and on overgrazed land. It is considered a noxious weed and can reach the dimensions of a "plague" in North America, Canada, Argentina, Hawaii, Australia, New Zealand and South Africa.
Geographical range Native range: Indigenous to Europe including British Isles and Scandinavia, as well as Western Asia (PIER, 2007). Known introduced range: Introduced in many tropical countries. Now spread to virtually all temperate zones of the world and on some tropical islands : La Réunion, Hawaii, New Caledonia (PIER, 2007).
Compiled by: Comité français de l'UICN (IUCN French Committee) & IUCN SSC Invasive Species Specialist Group (ISSG)