any of several mints of the genus Dracocephalum having spikes of double-lipped flowers.

1500–10; translation of Neo-Latin Dracocephalum

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World English Dictionary
dragonhead or dragon's-head (ˈdræɡənˌhɛd)
1.  any plant of the genus Dracocephalum, of Europe, Asia, and North America, having dense spikes of white or bluish flowers: family Lamiaceae (labiates)
2.  any North American plant of the related genus Physostegia, having pink or purplish flowers
dragon's-head or dragon's-head

Collins English Dictionary - Complete & Unabridged 10th Edition
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Encyclopedia Britannica


either of two genera of plants, Dracocephalum (see ) and Physostegia, both belonging to the mint family (Lamiaceae), order Lamiales. The about 45 species of Dracocephalum, all native in temperate Eurasia except for one in North America, have two-lipped flowers, lobed at the base and the upper lip, resembling fanciful heads of dragons. In North America D. parviflorum produces a dense spike of blue flowers at the top of its 60-cm- (2-foot-) high stem

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
Below each dragonhead was a toad with its mouth opened toward the dragon.
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