Species that are considered uncertain risk need a more in-depth assessment beyond the Risk Summary to better define the species’ risk to U.S. environments.
Rattlebox (Ludwigia alternifolia) is a plant that is native to parts of the Midwest and East Coast of the United States, as well as parts of Ontario and Quebec in Canada. This species is available from plant retailers based in the United States. No information confirming introductions outside of its native range was found, resulting in the history of invasiveness being classified as No Known Nonnative Population. The climate match with the contiguous United States was High, with high matches occurring from the East Coast to the Rocky Mountains. The certainty of assessment was Low due to a lack of information regarding the ecology and history of invasiveness for this species. The overall risk assessment category for L. alternifolia is Uncertain.
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Uncertain Risk
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