A special thank you to the following references for helping me pull together this website:


Brown, Paul Martin. 2006. Wild Orchids of Prairies and Great Plains Region of North America. Gainsville FL: University Press of Florida. 64-65


Cullina, William.2004. Understanding  Orchids. New York, NY: Houghton Miffilin Company. 104-105.


Dressler, Robert L. 1981. The Orchids: Natural History and Classification. 113.


Jaworski, Henry. 1992. Orchids Simplified: An indoor gardening guide. Shelburne, VT: Chapters Publishing LTD. 18, 59-63.


McKinley, Micheal. 2005. Ortho’s Complete Guide to Orchids. Des Moines, IA: Merideth Books. 74-75, 85-89


Mergen, Daryl E. 2006. Cypripedium parviflorum Salisb. (lesser yellow lady’s slipper): A Technical Conservation Assessment. Colorado Springs, CO: Mergen Ecological Delineations Inc. 20-31.


Rogers, Marilyn. 1999. Ortho’s All About Orchids. DesMoines, IA: Merideth Books. 42-45.


Smith, Welby R. 1993. Orchids of Minnesota. Minneapolis, MN: University of Minnesota Press. 72-73.


Walters, Dirk R. David J. Keil. 1996. Vascular Plant Taxonomy: Fourth Edition. Kendal/ Hunt Publishing Company.


USDA, NRCS. 2010. The PLANTS Database (, 23 April 2010). National Plant Data Center, Baton Rouge, LA 70874-4490 USA