- Davenport, Demorest, and Kohanzadeh, Youssef. “Orchids, Bilateral Symmetry and Insect Perception.” Journal of Theoretical Biology 94.2 (1982): 241-52.
- Schiestl, F.P. On the success of a swindle: pollination by deception in orchids. Naturwissenschaften 92, 255–264 (2005)
- Giurfa, Martin, Amots Dafni, and Paul R. Neal. “Floral Symmetry and Its Role in Plant‐Pollinator Systems.” International Journal of Plant Sciences 160, no. S6 (1999): S41-50.
- Arditti, Joseph & Elliott, John & Kitching, Ian & Wasserthal, Lutz. (2012). ‘Good Heavens what insect can suck it’– Charles Darwin, Angraecum sesquipedale and Xanthopan morganii praedicta. Botanical Journal of the Linnean Society. 169.
- Cypripedium parviflorum, US Forest Service, USDA, online resource
- MARTHA A. CASE, ZACHARY R. BRADFORD, Enhancing the trap of lady’s slippers: a new technique for discovering pollinators yields new data from Cypripedium parviflorum (Orchidaceae), Botanical Journal of the Linnean Society, Volume 160, Issue 1, May 2009, Pages 1–10
- Go Orchids, online resource from the North American Orchid Conservation Center
- Johnson, S. D., and T. J. Edwards. “The Structure and Function of Orchid Pollinaria.” Plant Systematics and Evolution 222, no. 1/4 (2000): 243-69
- M. Whitehead, Australia’s sexual swindlers, online resource
See full list of Individual Species References.
Please also refer to the General Bibliography and Online Resources.