Centaurea nigra

Centaurea nigra is a species of flowering plant in the daisy family known by the common names lesser knapweed, common knapweed and black knapweed. A local vernacular name is hardheads.

It is native to Europe but it is known on other continents as an introduced species and often a noxious weed.

单词	Centaurea nigra
释义	Centaurea nigra 英语百科 Centaurea nigra Centaurea nigra is a species of flowering plant in the daisy family known by the common names lesser knapweed, common knapweed and black knapweed. A local vernacular name is hardheads. It is native to Europe but it is known on other continents as an introduced species and often a noxious weed.
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