noun · congress weed (Parthenium hysterophorus), an invasive species of flowering plant in the aster family that causes allergies

这种银胶菊的花粉会导致严重的皮肤过敏。

guayule (Parthenium argentatum), a flowering shrub in the aster family used as an alternate source of rubber

银胶菊是提取天然橡胶的重要原料。