| 单词 | canada thistle |
| 释义 | > as lemmasCanada thistle Canada thistle n. a tall thistle native to Europe and northern Asia, Cirsium arvense (family Asteraceae), widely considered a noxious weed and invasive species, having erect stems, spiny, lobed leaves, purple flowers, and seeds bearing a feathery pappus. Also called creeping thistle.By the eighteenth cent. Canada thistle had been introduced to Canada from Europe, most likely as a contaminant in agricultural seeds, and had spread from Canada to the United States.extracted from Canadan.1< as lemmas |
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