The following bibliography has been generated by bringing together all references provided by our content partners. There may be duplication.

References

  • Cekalovic K. 1985. Catálogo de Opiliones de Chile (Arachnida). Boletín de la Sociedad de Biología de Concepción (Chile) 56: 7-29. Cakalovic K. 1976. Catálogo de los Arachnida: Scorpiones, Pseudoscorpiones, Opiliones, Acari, Aranea y Solifugae de la XII Región de Chile, incluyendo la Antártica chilena (Chile). Gayana Zool. (Chile) 37: 1-108.
  • Darwin, Charles. 1890. Journal of Researches Into the Natural History and Geology of the Countries Visited During the Voyage Round the World of H. M. S. 'Beagle' Under the Command of Captain Fitz Roy. New York City, NY : D. Appleton and Company; p. 175
  • Flora of China Editorial Committee. 2007. Fl. China 13: 1–548. Science Press & Missouri Botanical Garden Press, Beijing & St. Louis.
  • Forzza, R. C. & et al. 2010. 2010 Lista de espécies Flora do Brasil. http://floradobrasil.jbrj.gov.br/2010/.
  • Idárraga-Piedrahita, A., R. D. C. Ortiz, R. Callejas Posada & M. Merello. 2011. Flora de Antioquia. Catálogo de las Plantas Vasculares, vol. 2. Listado de las Plantas Vasculares del Departamento de Antioquia. Pp. 1-939.
  • New York Botanical Garden. 1916. Addisonia : colored illustrations and popular descriptions of plants. New York.
  • P. G. Howes, The Giant Cactus Forest and Its World: A Brief Biology of the Giant Cactus Forest of Our American Southwest (Duell, Sloan, and Pearce, New York; Little, Brown, Boston; 1954), from pp. 222-239, from p. 227.
  • SPECIMEN BASED RECORD. Published protolog data.
  • Solomon, J. C. 2001. Cactaceae. In: W.D. Stevens, C. Ulloa Ulloa, A. Pool & O.M. Montiel (eds.). Fl. Nicaragua. Monogr. Syst. Bot. Missouri Bot. Gard. 85: 509–519.
  • Steven Vogel. 2003. Comparative Biomechanics: Life's Physical World. Princeton: Princeton University Press. 580 p.
  • USDA, NRCS. 2007. The PLANTS Database (http://plants.usda.gov). National Plant Data Center, Baton Rouge.
  • “Cactus.” Wikipedia, The Free Encyclopedia. Available from: http://en.wikipedia.org/wiki/Cactus
  • “Nopal.” Wikipedia, The Free Encyclopedia. Available from:http://en.wikipedia.org/wiki/Nopal
  • “Opuntia ficus indica.” Wikipedia, The Free Encyclopedia. Available from:http://en.wikipedia.org/wiki/Opuntia_ficus-indica
  • “Opuntia.” Wikipedia, The Free Encyclopedia. Available from:http://en.wikipedia.org/wiki/Opuntia

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