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

References

  • 2007 - 2011. The International Plant Names Index (IPNI)
  • 2011. Checklist of CITES Species Part 1 CITES species index
  • Eggli, Urs, ed. 2004. Illustrated Handbook of Succulent Plants: Dicotyledons
  • Eggli, Urs, ed. 2004. Illustrated Handbook of Succulent Plants: Dicotyledons. 545
  • Isotype: Brandegee, T. S. 1909. Univ. Calif. Publ. Bot. 3: 386.
  • Orrell T. (custodian) (2013). ITIS Regional: The Integrated Taxonomic Information System (version Apr 2011). In: Species 2000 & ITIS Catalogue of Life, 11th March 2013 (Roskov Y., Kunze T., Paglinawan L., Orrell T., Nicolson D., Culham A., Bailly N., Kirk P., Bourgoin T., Baillargeon G., Hernandez F., De Wever A., eds). Digital resource at www.catalogueoflife.org/col/. Species 2000: Reading, UK.
  • University of California Publications in Botany 3(8): 386. 1909. (Univ. Calif. Publ. Bot.)

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