Paterson's curse
/ˌpatəs(ə)nz ˈkəːs/(also Patterson's curse) Australian and NZ
noun
A European bugloss, Echium plantagineum, a blue-flowered plant which has become a serious pasture weed in much of southern and western Australia and in parts of New Zealand, but is also valued for emergency fodder and as a honeybee plant.
Origin
Early 20th century. From the genitive of the surname Paterson + curse.