Ecological Risk Screening Summary - Ludwigia affinis (a plant, no common name) - Uncertain Risk

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 affinis is a freshwater plant native to Tropical America. Introductions outside of its native range have been reported in the Congo, Gambia, Ivory Coast, Liberia, Sierra Leone, and Zaïre. The introductions resulted in established populations, but the no information was found regarding impacts of the introductions. The history of invasiveness is classified as data deficient. Overall climate match with the contiguous United States is medium. Areas of high match include the Gulf and southern Atlantic coasts. The certainty of this assessment is low due to a lack of information regarding this species’ history of invasiveness. The overall risk assessment category for Ludwigia affinis is uncertain.