High Risk, High Eradication Impedance, Above Net Area Threshold. (Department of Agriculture (2014). Biosecurity Workshops Report. Department of Agriculture); Naturalised. Predominantly in improved grassland, marshy grassland, standing water (margin), also occurs in neutral grassland, dwarf shrub heath. c. 3 m. Very rare. Recorded on East Falkland (Stanley, Eliza Cove, Cape Pembroke). Not cultivated. (Upson R and Lewis R. Updated atlas and checklist. Report to Falklands Conservation. 2014; 225 pp.); Limited, very rare. Recorded to the east of the island. ([Heller, 2019] Falklands Conservation Flora and Fauna List (Unknown));
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Invasive. (Creation of a Risk Assessment Protocol for Cultivated Species in the Falkland Islands and Volunteer invasive plant recording sheet (Unknown).; Whitehead, J. (2008) Priorities for Control: A Risk Assessment of Introduced Species on the Falkland Islands. South Atlantic Invasive Species Project .pdf; Department of Agriculture, 2019. Biosecurity Workshops Report. Department of Agriculture); Agricultural weed. (Whitehead, J. (2008) Priorities for Control: A Risk Assessment of Introduced Species on the Falkland Islands. South Atlantic Invasive Species Project ); Biological impacts: Poses a threat to the native flora through their ability to invade natural communities. (Upson, R. (2012). Important Plant Areas of the Falkland Islands. Unpublished Report, Falklands Conservation. 80 pp.);
Native to European Southern-temperate areas but extensively naturalised beyond this range. (Upson R and Lewis R. Updated atlas and checklist. Report to Falklands Conservation. 2014; 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).; Whitehead, J. (2008) Priorities for Control: A Risk Assessment of Introduced Species on the Falkland Islands. South Atlantic Invasive Species Project ; Upson, R. (2012). Important Plant Areas of the Falkland Islands. Unpublished Report, Falklands Conservation. 80 pp.; Upson R and Lewis R. Updated atlas and checklist. Report to Falklands Conservation. 2014; 225 pp.;