Low Risk, Low Eradication Impedence, Low Net Area (Control At One Location Undertaken By An Employee Of The Landowner). (Department of Agriculture (2014). Biosecurity Workshops Report. Department of Agriculture); Species Present In Five Or More 10Km Grid Squares. (Creation of a Risk Assessment Protocol for Cultivated Species in the Falkland Islands and Volunteer invasive plant recording sheet (Unknown).); Naturalised. Rare. Sparsely scattered across East Falkland, West Falkland and Saunders Island. Not cultivated. (Upson R. & Lewis R. (2014). Updated atlas and checklist. Report to Falklands Conservation. 225 pp.); Sparsely scattered, rare. Falkland islands wide. ([Heller, 2019] Falklands Conservation Flora and Fauna List (Unknown));
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A Eurasian Boreo-temperate species that has naturalised so extensively in N. America that it is now Circumpolar Boreo-temperate. (Upson R. & Lewis R. (2014). Updated atlas and checklist. Report to Falklands Conservation. 225 pp.);
Blake D., Stanworth A., Wong L, Pagad S. (2020). Global Register of Introduced and Invasive Species of Falkland Islands (Islas Malvinas). Version 1.2. Invasive Species Specialist Group ISSG.; Department of Agriculture (2014). Biosecurity Workshops Report. Department of Agriculture.pdf; Creation of a Risk Assessment Protocol for Cultivated Species in the Falkland Islands and Volunteer invasive plant recording sheet (Unknown).; Upson R. & Lewis R. (2014). Updated atlas and checklist. Report to Falklands Conservation. 225 pp.; ([Heller, 2019] Falklands Conservation Flora and Fauna List (Unknown))