| helmetflower | (n) any of several orchids of the genus Coryanthes having racemes of a few musky-scented waxy flowers with a helmet-shaped lip process, Syn. helmet orchid |
| monkshood | (n) a poisonous herb native to northern Europe having hooded blue-purple flowers; the dried leaves and roots yield aconite, Syn. helmetflower, helmet flower, Aconitum napellus |
| skullcap | (n) a herbaceous plant of the genus Scutellaria which has a calyx that, when inverted, resembles a helmet with its visor raised, Syn. helmetflower |