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.
Nechamandra alternifolia, Indian oxygen-weed, is a submersed aquatic plant native to freshwater systems of India and Southeast Asia. There is some disagreement as to if the species is native to the entirety of the southern Asian range or just to the eastern or western parts. It is recorded as present in Sudan. There was no information found regarding any impacts from the species’ presence in Sudan, making the history of invasiveness Data Deficient. This species has not been reported in the United States, but is listed as a Class 1, prohibited aquatic plant in the state of Florida. The overall climate match for the contiguous United States was Medium, with an area of high match in Florida, and areas of medium match occurring along the border with Mexico, the Gulf Coast of Texas, and the southeastern coast. The certainty of assessment is Low due to a lack of information on impacts, limited information on introductions and contradictory information on native distribution, and taxonomic confusion. The overall risk assessment category for this species is Uncertain.
Publication date
Type of document
Uncertain Risk
Program
