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According to one theory, seed may have arrived from mainland Africa on the feathers of the wideawakes, how oceanic seabirds could have acquired it is unknown. If so, then E. cenchroides is technically ?Native/marked-out as a natural colonist and not one brought in by man. (Lambdon, P. & Darlow, A. (2008) Botanical Survey of Ascension Island and St. Helena 2008. RSPB);
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;