Low Risk, Low Eradication Impedance, Low Net Area. (Department of Agriculture (2014). Biosecurity Workshops Report. Department of Agriculture.Pdf ); Naturalised. Very rare. Recorded on West Falkland (Chartres, Fox Bay East, Fox Bay West). Not cultivated. (Upson R. & Lewis R. (2014). Updated atlas and checklist. Report to Falklands Conservation. 225 pp.); Limited, rare. Found to the west of the island. ([Heller, 2019] Falklands Conservation Flora and Fauna List (Unknown));
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Native to western N. America. (Resource ID 119 - UPDATED VASCULAR PLANT CHECKLIST AND ATLAS FOR THE FALKLAND ISLANDS - lewis2014);
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.;