426 GYMNOSPERMS 



and anthers with four rows, both characters certainly angiospcrmic. 

 Later, Harris,-'- describing material collected from Greenland, came 

 to the conclusion that the carpels were open at the time of pollina- 

 tion and that the pollen grains were drawn in through the micropyle 

 to the nucellus; these are just as certainly gymnospermic characters. 

 For the present, we are not inclined to ascribe the order to either 

 group, but await the finding of additional material, with both re- 

 productive and vegetative structures preserved, which will make it 

 possible to establish the position of the Caytoniales. 



