Barkman, T.J., Beaman, J.H., and Gage, D.A. 1997. Floral fragrance variation in Cypripedium: implications for evolutionary and ecological studies. Phytochem. 44:875-882. |
|
Bergström, G., Birgersson, G., Groth, I., and Nilsson, A. 1992. Floral fragrance disparity between three taxa of lady’s slipper Cypripedium calceolus L. (Orchidaceae). Phytochem. 31:2315-2319. |
|