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.
Ludwigia ovalis is a perennial plant that grows in lake and pond beds and is also used in the aquarium trade in the United States and abroad. The species is native to China, Taiwan, Japan, and the Korean Peninsula. Its history of invasiveness is classified as No Known Nonnative Population because of a lack of documented introductions into the wild outside the native range and limited data to characterize the volume and duration of trade in this species. The overall climate match with the contiguous United States is high; high matches were concentrated in the eastern and central contiguous United States while much of the land west of the Rocky Mountains had a low match. The certainty of this assessment is low due to the lack of information on impacts of introduction. The overall risk assessment category for Ludwigia ovalis is Uncertain.
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Uncertain Risk
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