Species that are considered high risk have a well-documented history of invasiveness in at least one location globally, and a high or medium climate match to the contiguous United States.
Palay Rubbervine (Cryptostegia grandiflora) is a vine native to Madagascar that is commonly found along rivers. As the common name suggests, this plant has been used historically as a source material for rubber production. It has also been used to some extent as an ornamental plant. The history of invasiveness for Cryptostegia grandiflora is high. C. grandiflora has spread substantially from its native range in Madagascar. The species has been introduced as an ornamental plant and for rubber production. C. grandiflora has caused substantial ecological and economic problems since being introduced in Australia. Climate matching indicated the contiguous United States has a high climate match with established C. grandiflora populations in some southern states. The certainty of assessment is high. The overall risk assessment is high.
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High Risk
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