Low Eradication Impedance, Low Net Area. (Department of Agriculture (2014). Biosecurity Workshops Report. Department of Agriculture); Very rare. The only reliable record is from East Falkland (Teal Inlet settlement) made in 1949, status uncertain due to possible confusion with Tripleurospermum. Probably locally extirpated (R. Lewis 2012). Not cultivated. (Upson R. & Lewis R. (2014). Updated atlas and checklist. Report to Falklands Conservation. 225 pp.); Historial, very rare. Recorded to the east of the island. Probably extirpated. ([Heller, 2019] Falklands Conservation Flora and Fauna List (Unknown));
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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.;