Species not Established in the U.S.

The following species of concern represent examples of why we must increase our efforts in early detection and rapid response and prevention of new introductions. See Manager's Tool Kit - Early Detection and Rapid Response: Species not Established in the U.S. for general resources and other species information.

• British yellowhead
• Oxygen weed (aquatic species)

This information is provided as an educational tool and is not inclusive of all invasive plant species not yet established in the U.S.

Scientific name: Inula Britannica L.

Common name: British yellowhead, British elecampane, meadow fleabane

Native To: Europe and Asia (Oregon Fish & Wildlife 2005)

Images: Invasive.org and Google

Date of U.S. Introduction: 1915 in New York; 1990 in Michigan (Morton and Hansen 2002); 2002 in Oregon (Oregon Fish & Wildlife 2005)

Means of Introduction: Found in U.S. nurseries usually in hosta plants imported from the Netherlands (Morton and Hansen 2002)

Impact: Roots of Inula britannica look very similar to hosta roots. It is invasive and there is concern it could become aggressive if it were to get established in the wild. (Morton and Hansen 2002)

Resources:
Inula britannica L. – An Aggressive Weed Alert (PDF | 979 KB)
Alabama Cooperative Extension System.

Inula Pest Alert
National Plant Board.

Inula
Massachusetts Introduced Pests Outreach Project.

Citations

Morton, C.M. and C.J. Hansen. 2002. Inula britannica L. – An Aggressive Weed Alert (PDF | 979 KB). Alabama Cooperative Extension System. ANR-1227.

Oregon Department of Fish & Wildlife. 2005. Oregon Invasive Species Action Plan (PDF | 2 MB). June 2005.