Low Risk, High Eradication Impedence, Low Net Area. (Department of Agriculture (2014). Biosecurity Workshops Report. Department of Agriculture); Rookery Bay, East Falkland (VC 47) - last recorded 1944. Probably locally extirpated (R. Lewis 2012). Not cultivated. (Upson R and Lewis R. Updated atlas and checklist. Report to Falklands Conservation. 2014; 225 pp.); Historial, very rare. Found to the east of the island. Probably extirpated. ([Heller, 2019] Falklands Conservation Flora and Fauna List (Unknown));
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 and Lewis R. Updated atlas and checklist. Report to Falklands Conservation. 2014; 225 pp.; ([Heller, 2019] Falklands Conservation Flora and Fauna List (Unknown))