THE EVOLUTION OF PLANTS 



/\/7cestpr5 of LLjCOjosidaandPteropsj(^ii 



Fig, 13. — Hypothetical genealogical tree, 

 showing the ancestral line of the modern plant 

 orders according to a polyphyletic hypothesis. 

 (Compare Fig. 11.) 



Reproduced, by permission, from Gager's Funda- 

 mentals of Botany, published by P. Blakiston's Sons 

 & Co. 



[151] 



