lie 



NEOTTE.E. 



CiiAi-. IV. 



convex in front and concave behind, with its sliarp 

 summit sliplitly liollowed out on each side ; it arches 

 over the stigmatic surface (fig. 18, A, r, s). Internally, 



Fig. 18. 



LisTizHA OVATA, or Twav-blado. (Partly copied from Hooker.") 



A. Flower viewed laterally, with 

 all the sepals ami petals, except 

 the labellum, removed. 



B. Ditto, with the pollinia re- 



moved, and with the rostehuin 

 bent down after the ejection 

 of the viscid matter. 



