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单词 spotted knapweed
释义

spotted knapweed

noun
A biennial herb of European origin with pink flowers on prickly stems. It is established across most of North America and is regarded as a noxious weed nearly everywhere.
  • Centaurea biebersteinii, family Compositae.
The weeds, spotted knapweed and leafy spurge, are native to Europe....
  • The spotted knapweed is a European invader that, over the last hundred years, has spread throughout the pastures and rangeland of western North America, often out-competing native species.
  • Sheep are efficient foragers and, unlike cattle, can thrive on a fair number of invasive weeds, such as leafy spurge and spotted knapweed.
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更新时间:2025/3/22 8:36:21