No. 568] X CAPSELLA BURSA-PASTOIUS APACTINOIDEA 227 



The flowers are small, the petals especially so. The 

 anthers shrivel up early and as a rule are devoid of pollen 

 UTains. Occasionally a few can he demonstrated. The 

 ovary, though small, contains what appear to he ovules 

 capable of being fertilized. Thus far I have collected 

 eight seeds contained in 6 capsules on unguarded plants 

 of arachnoidea (Fig. 18). Two of these germinated, the 

 one yielding a plant which looks like simplex, though 

 having a large amount of red coloring matter in the peti- 

 oles, while the other is an arachnoidea. Attempts to arti- 

 ficially fertilize aradinnidea have failed absolutely. 

 ^ -\> lias heen shown above, one may distinguish, on the 



noidea, viz. : BBNN, BbNN and bbNN. Externally no 



