difTicult to deterTnine whother there is pi-esent a de- 

 i'initive niaci'ospoi'o or a rnacrospore mother-cell. There 

 is no evidence oi' the presence of more than one macro- 

 spore mother-c^ll however, 'I'hero must also be some 

 time here between pollination and fertilization. 



LIQUIDM4RAR STYRACIFLUA - 



Li<i\iidambar is not so closely related to liamam- 

 elis as the other p;enera studied. The buds here pass 

 ■,he winter with the merest rudiments of the floral or- 

 gans present. The stamens are only small protuberances 

 which do not show any archesporium. 



The mature anthers are quadrilocular and open by 

 slits, (Fig. 45). The fibrous layer is very slightly 

 developed as compared with Hamamelis. The flowers are 

 imperfect, with rudiments of stamens appearing as nec- 

 tai-ies among the flowers in the female heads. These 



