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.
Villarsia umbricola is a marsh flower native to Southern Australia and Tasmania. This species has not been found in the wild or in trade within the United States. V. umbricola has been documented in trade for use as a pond plant within its native range of Australia. No substantial trade history was found. The history of invasiveness is classified as No Known Native Population. This species has not been reported as introduced or established outside of its native range, therefore no information on impacts of introduction is available. The overall climate match for V. umbricola in the contiguous United States is Medium, with a medium match throughout a majority of the county and a high match in the West, inland Southeast, and coastal southern New England. The certainty is Low due to lack of information. The overall risk assessment category for Villarsia umbricola is Uncertain.
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Uncertain Risk
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