THE EVOLUTION OF PLANTS 



239 



nospermtte 

 (Hypothetical) 



Dawn \o/ t/7fcjFosa/7 Record 



Ancestors of 



FIG. in. Genealogical tree, showing the ancestral line of the modern 

 plant orders according to a polyphyletic hypothesis. Full explanation 

 in the text. (Cf. Fig. no.) 



