black knapweed
- noun
:
centaurea negra
- The field was dotted with the bright purple blooms of black knapweed.
Examples
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We found black knapweed growing wild along the country lane.
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Gardeners often remove black knapweed because it can become invasive.
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The black knapweed blooms beautifully in the summer.
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Have you seen the black knapweed growing in the garden?
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The field was dotted with the bright purple blooms of black knapweed.
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We found black knapweed growing wild along the country lane.
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Gardeners often remove black knapweed because it can become invasive.
Synonyms
A wild plant with thin stiff stems and purple flower heads that grows in meadows and often spreads into fields
A wild plant with purple flowers and tough, wiry stems
A wild plant common in meadows with strong stems and purple flowers that attract insects
Surface Forms
Morphology
This is a straightforward adjective+noun compound where 'black' describes the color/appearance of the 'knapweed', so a B1 learner knowing both constituents can infer it denotes a kind of knapweed that is dark/black. Such descriptive plant names are compositional and cross-linguistically common, making the meaning predictable from the parts.
Etymology
Black knapweed gets its name from how the plant looks. Each flower makes a round, button-like head with a darker centre, and the old word knap meant a small 'knob', so the words black and knap together give a simple picture of a plant with dark, button-like flowers.
