2A perennial Eurasian knapweed, Acroptilon repens (formerly included in the genus Centaurea), with pink-purple flowers and creeping roots, considered to be invasive weed in North America and certain other areas.
2A perennial Eurasian knapweed, Acroptilon repens (formerly included in the genus Centaurea), with pink-purple flowers and creeping roots, considered to be invasive weed in North America and certain other areas.