1 64 



ORCHIS. 



[chap. 



and thus to expose the two viscid balls {dd). Now 

 Suppose an insect visiting this flower : it alights on 



FlO. 122. Pl(,^ ,jj^ 



Fig. 121 -Side view of flower, with all the petals and sepals cut off e;[cept the 

 Up, of which the near half is cut away, as well as the upper portion of the near 

 side of the nectary . 

 Fig. 122, -Front view of flower, with all sepals and petals removed except the lip 

 1* IG. 123. — The two pollinia. ^ 



the lip (/), and pushing its proboscis down the nec- 

 tary to the honey, it can hardly fail to bring the 



