er , even as late ^s January, 



Ovules and Emb ryq-sa^ , 



The ovules show specialization of archesporial 

 tissue at the tip of the nucelliis before the integu- 

 ments have be,^in to bo developed, but it is very dif- 

 ficult to distinguish archesporial cells. There 

 seemi to be several of these, however. They each cut 

 off a tapetal cell above, -.vhich divides repeatedly. 

 The cells of this tissue then elongate in the direc- 

 tion of the long axis of the nucellus, and bury the 

 moth or- eel Is by some eight cells in the nucellus. It 

 is also probable that this part of the nucellus foms 

 the extremity of the conducting tissue for the pollen 

 tube. In early stages from three to five macrospars 

 can be seen, but only one germinates. This goes 

 through the usual stages, the resulting nuclei being 



