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


  • Bailey, L.H. & E.Z. Bailey. 1976. Hortus Third i–xiv, 1–1290. MacMillan, New York.
  • Govaerts R. (ed). For a full list of reviewers see: (2015). WCSP: World Checklist of Selected Plant Families (version Sep 2014). In: Species 2000 & ITIS Catalogue of Life, 26th August 2015 (Roskov Y., Abucay L., Orrell T., Nicolson D., Kunze T., Flann C., Bailly N., Kirk P., Bourgoin T., DeWalt R.E., Decock W., De Wever A., eds). Digital resource at Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.
  • Hickman, J. C. 1993. The Jepson Manual: Higher Plants of California 1–1400. University of California Press, Berkeley.
  • Hitchcock, C. H., A.J. Cronquist, F. M. Ownbey & J. W. Thompson. 1969. Vascular Cryptogams, Gymnosperms, and Monocotyledons. 1: 1–914. In C. L. Hitchcock Vasc. Pl. Pacif. N.W. University of Washington Press, Seattle.
  • Munz, P. A. & D. D. Keck. 1959. Cal. Fl. 1–1681. University of California Press, Berkeley.
  • S.Watson. 1871. In: Botany [Fortieth Parallel] : 350
  • Syntype: Watson, S. 1871. Rep. U.S. Geol. Explor. Fortieth Par., Bot. 5: 350.
  • United States Geological Expolration [sic] of the Fortieth Parallel. Vol. 5, Botany 350. 1871. (Botany (Fortieth Parallel))


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