Verloove, F., J. Thiede, Águedo Marrero Rodríguez, M. Salas-Pascual, J. Reyes-Betancort, E. Ojeda-Land, and G. Smith. “A Synopsis of Feral Agave and Furcraea (Agavaceae, Asparagaceae S. Lat.) in the Canary Islands (Spain)”. Plant Ecology and Evolution, Vol. 152, no. 3, Nov. 2019, pp. 470-98, doi:10.5091/plecevo.2019.1634.