Chap. VII. 



CTCNOOHES VENTRICOSUM. 



223 



the extremity of the column, or whether they first 

 alight on this part of the column ; but in either case 

 they would cause the ejection of the pollinia, which 

 would adhere to some part of their bodies. 

 The specimens which I examined were certainly 



Fig. 34.- 



DlAQBAMMATIO SECTION OF A FlOWEB-BUD, THE OOLUMH PLACED 

 UPRIGHT. 



a. anther. 



/. filament of anther. 



p. pollen-mass. 



pd. pedicel of pollinium, barely se- 

 parated as yet from the ros- 

 tellnm. 



d. disc of pollinium with the depen- 

 dent curtain. 

 s. stigmatic chamber. 

 g. stigmatic canal leading to the 



ovarium. 



male plants, for the pollinia were well developed. ' The 

 stigmatic cavity was lined with a thick layer of pulpy 

 matter which was not adhesive. But as the flowers 

 cannot possibly be fertilised until the pollinia have 

 been ejected, together with the great curtaiu which 

 covers the whole stigmatic surface, it may be that 



