豚草属（学名：Ambrosia L.）本属有数十种，分布于美洲的北部、中部和南部*。中国有2个外来的驯化种，都隶属于豚草组 (Sect. Ambrosia. Sect. Euambrosia Torr. et Gray, in Fl. North. Amer. II, 290)。组的特征是：雄头状花序多少有花序梗；花托有丝状托片或无托片；总苞整齐，边缘有齿或近全缘；包裹瘦果的总苞近球形或卵形。
特应性定义为对螨类、链格孢属、分子孢子菌属、草、桦木、墙草属、橄榄或豚草属皮肤划痕实验阳性。
Atopy was defined as a positive skin-prick test to mites, cat, Alternaria, Cladosporium, grass, birch, Parietaria, olive, or ragweed.
应用该体系对三裂叶豚草进行了风险评估，得出其风险值为83，属高度危险的检疫性有害生物。
According to this system, the risk value for giant ragweed was 83 and it was considered as a quarantine pest with high risk.
研究结果说明，苍耳属植物可能是广聚萤叶甲除豚草外的另一潜在寄主植物。
It was suggested that X. sibiricum could be a suboptimal host plant as an alternative to optimal A. artemisiifolia for the leaf beetle O. communa.
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