helmet flower

(noun) a poisonous herb native to northern Europe having hooded blue-purple flowers; the dried leaves and roots yield aconite. Synonyms: monkshood, helmetflower, helmet flower, Aconitum napellus.

(noun) a herbaceous plant of the genus Scutellaria which has a calyx that, when inverted, resembles a helmet with its visor raised. Synonyms: skullcap, helmetflower.

(noun) any of several orchids of the genus Coryanthes having racemes of a few musky-scented waxy flowers with a helmet-shaped lip process. Synonyms: helmetflower, helmet orchid.