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.
Blyxa leiosperma is an aquatic plant native to Japan and the Yangtze River Delta of eastern China. Very limited biological, ecological, and distribution information was available for this species. There was no indication in the literature that species is regulated or in trade. It is used for animal fodder. There are no known introductions or nonnative populations reported in the literature; therefore the history of invasiveness is classified as No Known Nonnative Population. The overall climate match for the contiguous United States was High. Much of the contiguous United States had a low match (western and northern areas) or medium match. Areas of high match were found along the southern and mid-Atlantic Coast, central Appalachia, and central Texas north to Missouri. The certainty of assessment was Low due to the limited available information regarding this species and the lack of specific georeferenced information regarding distribution. The overall risk for this species is Uncertain.