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.
Helanthium bolivianum, Bolivian Chain Sword, is an herbaceous aquatic plant that is native to South and Central America and the Caribbean Islands, including Puerto Rico. H. bolivianum is commonly available in the aquarium trade. The History of Invasiveness for Helanthium bolivianum is classified as No Known Nonnative Population. There is one record of H. bolivianum being introduced outside its native range to Mauritius. However, no information on how it was introduced, if a population is established, and if there were any impacts from this introduction was found. The overall climate match with contiguous United States was medium. Most of the Southeast had a medium match, except coastal areas where there was a high match. The certainty of assessment was low because of the limited information on introductions and the taxonomic uncertainty. The overall risk assessment category is Uncertain.