Onopordum illyricum
 Onopordum illyricum is a species of thistle known by the common name Illyrian thistle or Illyrian cottonthistle. It is native to southwestern Europe but has been introduced into Australia and California where it has become a noxious weed.The plant is a biennial herb producing an erect branching winged spiny stem known to exceed two meters in maximum height. The spiny leaves may be up to 50 centimeters long and are divided into deep toothed lobes.