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

References

  • 1996. database, NODC Taxonomic Code
  • 1996. database, The PLANTS Database
  • 2000. database, The PLANTS Database
  • Abrams, L. 1923. Ferns to Birthworts. 1: 1–557. In L. Abrams Ill. Fl. Pacific States. Stanford University Press, Stanford.   http://www.tropicos.org/Reference/1476 External link.
  • Bailey, L. H. & E. Z. Bailey. 1976. Hortus Third i–xiv, 1–1290. MacMillan, New York.   http://www.tropicos.org/Reference/922 External link.
  • Böcher, T. W. 1978. Greenlands Flora 326 pp.   http://www.tropicos.org/Reference/44208 External link.
  • Cody, W. J. 1996. Fl. Yukon Terr. i–xvii, 1–669. NRC Research Press, Ottawa.   http://www.tropicos.org/Reference/1006819 External link.
  • Flora of China Editorial Committee. 1988-2013. Fl. China Unpaginated. Science Press & Missouri Botanical Garden Press, Beijing & St. Louis.   http://www.tropicos.org/Reference/42480 External link.
  • Flora of North America Editorial Committee, e. 1993. Pteridophytes and Gymnosperms. 2: i–xvi, 1–475. In Fl. N. Amer. Oxford University Press, New York.   http://www.tropicos.org/Reference/10884 External link.
  • Hultén, E. 1968. Fl. Alaska i–xxi, 1–1008. Stanford University Press, Stanford.   http://www.tropicos.org/Reference/1480 External link.
  • Isotype: Underwood, L. M. 1898. Bull. Torrey Bot. Club. 25: 537.
  • Munz, P. A. & D. D. Keck. 1959. Cal. Fl. 1–1681. University of California Press, Berkeley.   http://www.tropicos.org/Reference/1717 External link.
  • 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.
  • Type collection: Underwood, L. M. 1898. Bull. Torrey Bot. Club. 25: 537.

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