.80 



ORIGIN OF CORMOPHYTA 



[CH. 



iS 



I 





7« J- 2 



Fig. 43. Adiantites fertilifi . (White), Irom the Lower 

 Carboniferous of the United States. (1) Sterile 

 fronds (reduced). (2) Fertile fronds and seeds (all 

 natural size except where magnification is stated). 

 After White, " Fossil Plants of the Group Cycado- 

 filices," Smith's Misc. Coll., Vol. 47, 1905. 



