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

References

  • Anonymous. 1986. List-Based Rec., Soil Conserv. Serv., U.S.D.A. Database of the U.S.D.A., Beltsville.   http://www.tropicos.org/Reference/1103 External link.
  • Correll, D. S. & M. C. Johnston. 1970. Man. Vasc. Pl. Texas i–xv, 1–1881. The University of Texas at Dallas, Richardson.   http://www.tropicos.org/Reference/1493 External link.
  • Correll. 1947. In: Amer. Orchid Soc. Bull. 16: 400
  • Dodson, C. H. 1992. Checklist of the Orchids of the Western Hemisphere. draft:.   http://www.tropicos.org/Reference/39812 External link.
  • Flora of North America Editorial Committee, e. 2002. Magnoliophyta: Liliidae: Liliales and Orchidales. 26: i–xxvi, 1–723. In Fl. N. Amer. Oxford University Press, New York.   http://www.tropicos.org/Reference/1003294 External link.
  • Govaerts R. (ed). For a full list of reviewers see: http://apps.kew.org/wcsp/compilersReviewers.do (2013). WCSP: World Checklist of Selected Plant Families (version Oct 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.
  • U. S. Fish and Wildlife Service. 1982. Endangered and Threatened Wildlife and Plants; Determination of Spiranthes parksii (Navasota ladies'-tresses) to be an Endangered Species. Federal Register, vol. 47, no. 88. 19539-19542

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