THE EVOLUTION OF PLANTS 
6iS 
II 
QAWA/ OF THT _[FossiL RECORD 
/Incestore of Primo-filices 
FIG. 433. Genealogical tree, showing the ancestral lines of the modern 
plant orders, according to a monophyletic hypothesis. Full explanation 
in the text. (Cf. Fig. 434.) 
