SUMMARY. 85 



The pollen is a term used to denote the minute grains contained in the 

 anther-cell. 



The androecium is said to be deciduous, when it falls off after discharging 

 the pollen. 



The androecium is said to be persistent, when it remains after the flower- 

 ing is over. 



The apostemonous androecium is one which consists of separate stamens. 



The synstemonous androecium is one which consists of more or less united 

 stamens. 



The simple apostemonous androecium is one which consists of but one 

 fertile stamen. 



The multiple apostemonous androecium is one which consists of two or more 

 separate stamens. 



The multiple apostemonous androecium is said to be regular, when it 

 consists of those stamens which are all of the same length and like form. 



The multiple apostemonous androecium is said to be irregular, when it 

 consists of those stamens which are of different length or unlike form. 



The synstemonous androecium is said to be complete, when its stamens 

 are united into one body. 



The synstemonous androecium is said to be incomplete, when its stamens 

 are united into two or more bodies. 



The attachment of the anther is said to be adnate, when it is attached 

 on its back throughout its whole length to the filament. 



The attachment of the anther is said, to be innate, when it is attached to 

 the filament by its base. 



The attachment of the anther is said to be versatile, when it is attached 

 by a point near its centre to the tip of the filament. 



When turned inwards, the anther is said to be introrse. 



When turned outwards, the anther is said to be extrorse. 



The act of discharging its contained pollen is called the dehiscence of the 

 anther. 



When the anther splits open longitudinally, its dehiscence is said to be 

 longitudinal. 



When the anther splits open transversely, its dehiscence is said to be 

 transverse. 



When the anther opens by holes, its dehiscence is said to be porous. 

 When the anther opens by uplifted valves, its dehiscence is said to be 

 valvular. 



The gynoscium is the inner series of the essential organs occupying the 

 centre of the flower, and it is composed of one or more usually sac-like organs. 



