Origination of Varieties 



213 



in sight). A rain within several days after the opera- 

 tion will be likely to render the work valueless, and 

 a very wet or a very hot season will sometimes cause 

 failure. 



The anther has two lobes, each at maturity of its 

 contents opening lengthwise by a slit in its face 

 "face" being the surface towards the fall. Each lobe 

 is filled with pollen, a powdery or dust-like substance, 

 usually white or cream-color, consisting of a multitude 

 of minute grains called "pollen-grains", each having 

 a rough surface. The pollen is mature when it is 

 ready to fall out or to be easily removed through the 



FIG. XLIV. STAMENS (Caprice) 



A, Stamen from bud just unfolding. 



B, Stamen from fully opened flower. 



