Text this: Pollination of wild lady slipper orchids Cypripedium yunnanense and C. flavum (Orchidaceae) in south-west China: Why are there no hybrids? (Botanical Journal of the Linnean Society (January 2008) 156: 1 (51-64))

  ______   __   __    ______   __   __     _____  
 /_   _//  \ \\/ //  /_   _//  \ \\/ //   / ___// 
 `-| |,-    \ ` //   `-| |,-    \ ` //    \___ \\ 
   | ||      | ||      | ||      | ||     /    // 
   |_||      |_||      |_||      |_||    /____//  
   `-`'      `-`'      `-`'      `-`'   `-----`