dragonhead

or drag·on's head

[ drag-uh n-hed ]
/ ˈdræg ənˌhɛd /

noun

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

Origin of dragonhead

1500–10; translation of New Latin Dracocephalum

British Dictionary definitions for dragonhead

dragonhead

dragon's-head

/ (ˈdræɡənˌhɛd) /

noun

any plant of the genus Dracocephalum, of Europe, Asia, and North America, having dense spikes of white or bluish flowers: family Lamiaceae (labiates)
any North American plant of the related genus Physostegia, having pink or purplish flowers