spikenard : Idioms & Phrases
american spikenard
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noun unarmed woody rhizomatous perennial plant distinguished from wild sarsaparilla by more aromatic roots and panicled umbels; southeastern North America to Mexico
life-of-man; Aralia racemosa; petty morel.
WordNet
Plowman's spikenard
(Bot.) , a European composite weed (Conyza squarrosa ), having fragrant roots.