| The Columbia Encyclopedia, Sixth Edition. 2001-07. |
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| cornflower |
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| common herb (Centaurea cyanus) of the family Asteraceae (aster family). It is a garden flower in the United States but a weed in the grainfields of Europe. It is called bluebottle or bluet in England and bluebonnet in Scotland; in North America the cornflower shares with other plants the names ragged robin, bachelor’s button, or ragged sailor. The long-stemmed blue heads of the flowers, having radiating bottle- or vase-shaped florets, yield a juice which, mixed with alum, has been used as a dye. Cornflowers are classified in the division Magnoliophyta, class Magnoliopsida, order Asterales, family Asteraceae. |
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| | | The Columbia Encyclopedia, Sixth Edition. Copyright © 2007 Columbia University Press. |
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