狗舌草含有大量有毒且适应力强的生物碱：即使是用它的花制成的蜂蜜也含有稀释后的毒素。
Ragwort contains a battery of toxic and resilient alkaloids: even honey made from its flowers contains the poison in dilute form.
19世纪末，狗舌草被偶然引入新西兰，像许多入侵的外来物种一样，它很快就变成了一种有害生物。
Ragwort was accidentally introduced to New Zealand in the late nineteenth century and, like so many invading foreign species, quickly became a pest.
本试验采用冷浸法提取狗舌草中总黄酮。
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