Onopordum, or cottonthistle, is a genus of plants in the tribe Cardueae within the family Asteraceae. They are native to southern Europe, northern Africa...

Onopordum acanthium (cotton thistle, Scotch (or Scottish) thistle) is a flowering plant in the family Asteraceae. It is native to Europe and Western Asia...

Onopordum illyricum is a species of thistle known by the common name Illyrian thistle, or Illyrian cottonthistle. It is native to southwestern Europe...

Onopordum nervosum, called Moor's cotton thistle or reticulate thistle, is a species of flowering plant in the genus Onopordum native to the Iberian peninsula...

Cardueae (synonym: Cynareae), especially the genera Carduus, Cirsium, and Onopordum. However, plants outside this tribe are sometimes also called thistles...

variegated thistle and Scotch thistle (though not to be confused with Onopordum acanthium or Cirsium vulgare). This species is an annual or biennial plant...

Onopordum tauricum, the Taurian thistle or bull cottonthistle, is a species of thistle. It is native to Eurasia and is known in Australia and the western...

on Asteraceae species, including Cirsium, Carduus, Centaurea, Arctium, Onopordum, Helianthus, and Artemisia. The painted lady uses over 300 recorded host...

graveolens), heather (Erica species), thistles (genera Carduus, Cirsium, and Onopordum) and Buddleja davidii. The female lays eggs in the nests of social wasps...

thistle Onopordum acanthium, an invasive weed. Joe Balciunas (2007). "Lixus cardui, a biological control agent for scotch thistle (Onopordum acanthium):...