Any of various plants of the genus centaurea having purple thistlelike flowers .
矢车菊属的任何一种植物，具有紫色的蓟状花。
Any of various thistles of the genus centaurea , having variously colored flowers grouped in a head with a spiny involucre .
黑矢车菊一种属于矢车菊属的蓟属植物，其花有多种颜色，聚集在有刺状花被的头状花序里。
An annual eurasian plant ( centaurea cyanus ) in the composite family , cultivated and also naturalized in north america and having showy heads of blue , purple , pink , or white flowers .
