16 



OFEBE^. 



Chap. H. 



to the air, instead of lying almost hidden at the base of 

 the anther, as in Orchis, and thus kept damp. Never- 

 theless, when a poUinium is removed, the caudicle 

 bends downwards in the course of about six minutes, 

 and, therefore, at an unusually slow rate ; the upper 



Fig. 5. 



OpHKrS MUSCIPERA, OR FlY OpHEYS. 



d, antfiei. s. stigma. 



r,r, rostelU. I. labellum. 



A. Flower viewed in front : the two 

 upper petals are almost cylin- 

 drical and haiiy : the two ros- 

 tella stand a little in advance 



of the bases of the anther-cells ;■ 

 but this is not shown from the 

 foreshortening of the drawing. 

 B. One of the two pollinia removed 

 from its anther-cell, and viewed 

 laterally. 



end still remaining curved. I formerly thought that 

 it was incapable of any movement, but have been con- 

 vinced by Mr. T. H. Farrer of my error. The ball of 

 viscid matter is bathed in fluid within the pouch formed 

 by the lower half of the rostellum, and this is necessary, 



