frostweed

• n.
  • 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

    同义词： frost-weed frostwort Helianthemum canadense Crocanthemum canadensei

  • tall perennial herb having clusters of white flowers; the eastern United States

    同义词： Virginia crownbeard frost-weed Verbesina virginica

以上来源于: WordNet