1) Centaurea 2) Hardheads
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https://www.crosswordclues.com/clue/knapweed
1) Centaury 2) Hardy purple-flowered plant
Found on
https://www.crosswordclues.com/clue/knapweed
• (n.) The black centaury (Centaurea nigra); -- so called from the knoblike heads of flowers. Called also bullweed.
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http://thinkexist.com/dictionary/meaning/knapweed/
(from the article `basket-flower`) ...also are cultivated as garden ornamentals, especially cornflower (C. cyanus), dusty miller (C. cineraria and C. gymnocarpa), and sweet sultan (C. ...
Found on
http://www.britannica.com/eb/a-z/k/40
(Centaurea) These are hardy, herbaceous, perennial and annual plants that are natives of many European countries, in North America and other numerous places. Some of the herbaceous kinds make very nice border plants. Centaureas belong to the Daisy family, Compositae. The annual Cornflower, C. Cyanus, also known as Bachelor's-Button, grows 1 to 11/2...
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http://www.encyclo.co.uk/local/10004
Knap'weed` noun (Botany) The black centaury (
Centaurea nigra ); -- so called from the knoblike heads of flowers. Called also
bullweed .
Found on
http://www.encyclo.co.uk/webster/K/13
Knapweed is a plant of the genus Centaurea.
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http://www.probertencyclopaedia.com/browse/BK.HTM
[
n] - any of various plants of the genus Centaurea having purple thistlelike flowers
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http://www.webdictionary.co.uk/definition.php?query=knapweed
Any of several weedy plants belonging to the daisy family. In the common knapweed (
C. nigra), also known as a hardhead, the hard, dark buds break open at the top into pale purple composite flowers. It is native to Europe and has been introduced to North America. (Genus
Centaurea, family Compositae.)
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https://www.encyclo.co.uk/local/21221
any composite plant of the genus Centaurea, esp. the weedy C. nigra, having rose-purple flowers set on a dark-colored, knoblike bract. Also called
Found on
https://www.infoplease.com/dictionary/knapweed
No exact match found.
