bugbane 
noun
A tall plant of the buttercup family, with spikes of cream or yellow flowers and fern-like leaves, native to north temperate regions.
- Genus Cimicifuga, family Ranunculaceae: several species, in particular C. foetida.
- Wood anemones, epimediums, bugbanes, and toad lilies create intricate tapestries under flowering shrubs and trees.
- Throughout the woodlands, color can be found in late-blooming azaleas, lilies, bugbanes, hostas, and hydrangeas.
Origin
Early 19th century: from bug + bane, with reference to the former use of the species C. foetida to drive away bedbugs.
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