246 MORPHOLOG Y. 



479. Perhaps there is not a fundamental difference between 

 gametophyte and sporophyte. — This development of sporo- 

 phyte, or leafy -stemmed plant of the fern, from the tissue of the 

 gametophyte is taken by some to indicate that there is not such a 

 great difference between the gametophyte and sporophyte of plants 

 as others contend. In accordance with this view it has been 

 suggested that the leafy-stemmed moss plant, as well as the leafy 

 stem of the liverworts, is homologous with the sporophyte or 

 leafy stem of the fern plant; that it arises by budding from the 

 protenema; and that the sexual organs are borne then on the 

 sporophyte. 



