74 



NATURAL HISTORY 



Subdivision A 

 pi"! mi live, 

 vasculctr plants 



WTJVjynia 

 Devonian plant ^ 



RsilophyCalcs ^-"^ 

 -.i <'..^ .(2)p5notum 



(3)Tmesipteris 



$UBDIVI5I0M B 

 Lycopsicta 



club mosses 



sporopVr/te y,- 





Lycopodium. 



:5UBD I VISION C 

 ophejiopsido. 



/ 



TI?ACH£OPHYTA 



vascular' plants 



Subdivision!) 

 Pberopsida 



ferns . seed plants, 



polkw 



<j'gametopViyt<2 



tipof 



pollen 



tube 



^''\ cells ' 



txtbe 



@,^/C<3ll 



^mtoikr 



>>^ cell i 





eicxssi 



Filicineae 



arc 





Gymr205perma<2 



dicotyledon ii20i20Ccit/kfGn 



AndioSpermae 



oclVc, iTioLple . elm , ccc . 



