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Dittrichia viscosa (Linnaeus) Greuter [Inula viscosa Linnaeus, Cupularia viscosa (Linnaeus) Godron & Grenier] was collected in the late 1800s as a ballast weed in Florida, New Jersey, and Pennsylvania. It does not appear to have become naturalized at any of those sites (A. Cronquist 1980; J. E. Arriagada 1998).