frost-weed, n.
tall perennial herb having clusters of white flowers; the eastern United States
<noun.plant>
Verbesina virginica Virginia crownbeard frost-weed frostweed
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hypernym
perennial of the eastern United States having early solitary yellow flowers followed by late petalless flowers; so-called because ice crystals form on it during first frosts
<noun.plant>
Crocanthemum canadense Helianthemum canadense frost-weed frostweed frostwort
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hypernym