1) Asterid dicot genus 2) Genus onopordon 3) Genus onopordum 4) Onopordum 1) Onopordum 
Onopordon is a genus of hardy herbaceous plants of the family Compositae, characterised by large purple or white flower-heads, with a fleshy, honeycombed receptacle, and a hairy, rough pappus. The species include the ' Scotch thistle'.