A few plants are present on the ascent to Sister’s Peak, and a small but dense patch in the gully between the Mountain Road and the south side of Middleton’s Ridge. As this species is extremely invasive on St. Helena, and could potentially be well-adapted to the upper dryland areas of Ascension, its immediate removal is strongly recommended. (Lambdon, P. & Darlow, A. (2008) Botanical Survey of Ascension Island and St. Helena 2008. RSPB);
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Pagad S, Wong L J (2022). Global Register of Introduced and Invasive Species Ascension Island, Saint Helena, Ascension and Tristan da Cunha. Version 1.4. Invasive Species Specialist Group ISSG. Checklist dataset https://doi.org/10.15468/vijxee; Lambdon, P. & Darlow, A. (2008) Botanical Survey of Ascension Island and St. Helena 2008. RSPB