Two species of Aloe L., Aloe vera (L.) Burm.f. and A. arborescens Mill. have been recorded as naturalised in Portugal: A. vera as an occasional escape along the Algarve in the south, and A. arborescens from central coastal regions around Lisbon. Here we record the spread of A. arborescens further north along the Portuguese coast, especially around the coastal town of Nazaré. This species has become firmly established as part of the introduced flora of the country. Its potentially serious impact as an invasive species is emphasised.
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1 July 2009
Aloe arborescens Mill. (Asphodelaceae) is spreading in Portugal
Gideon F Smith,
Estrela Figueiredo
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