Centaurea nigra, n.
a weedy perennial with tough wiry stems and purple flowers; native to Europe but widely naturalized
<noun.plant>
Centaurea nigra black knapweed hardheads lesser knapweed
semantic pointers
hypernym
Word
a weedy perennial with tough wiry stems and purple flowers; native to Europe but widely naturalized
<noun.plant>
Centaurea nigra black knapweed hardheads lesser knapweed