Common. (Gibraltar flora database (Unknown)); (Pagad S., Wong L.J. (2020): Global Register of Introduced and Invasive Species – Gibraltar. v1.1. Invasive Species Specialist Group ISSG; Pagad S, Wong L J (2020): Global Register of Introduced and Invasive Species of Gibraltar. v1.1. Invasive Species Specialist Group ISSG.28 (under synonym Conyza albida);
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Invasive (European Commission (2005) Especies vegetales invasoras en Andulasia. La Consejería de Medio Ambiente, Junta de Andalucía);
Not a problem. (Species that have been introduced into Gibraltar. (Unknown).);
Terrestrial. Introduced from South America. (Species that have been introduced into Gibraltar. (Unknown).);
Species that have been introduced into Gibraltar. (Unknown).; Gibraltar flora database (Unknown); European Commission (2005) Especies vegetales invasoras en Andulasia. La Consejería de Medio Ambiente, Junta de Andalucía; Pagad S., Wong L.J. (2020): Global Register of Introduced and Invasive Species – Gibraltar. v1.1. Invasive Species Specialist Group ISSG; Perez, C.E. & Bensusan, K. (2005) The Upper Rock Nature Reserve, A Management and Action Plan. The Gibraltar Ornithological & Natural History Society. Gibraltar (under synonym Conyza albida);