n8 



ANGIOSPERMAE 



Fig, 69. Theoretical diagram, representing the more or less probable stages in 

 the development of the orders of the Angio sperms. 



Vruntttoe Gymnosnerm 



Pruintioi 

 J Coni l\ riii 



PriniilincA/i(/ios//iT/ti~ 

 iDicbtyl ty/ic 1 



Pinn 1 1 u>e I Dicotyledon 



Primitive 

 Monocotyledons 



Dicotyledon 



Dicotyledons 



Monocotyledons 



The number of branches in the diagram is quite arbitrary and merely intended to show 

 that there are several lines of independent development. 



The two classes of the Angiosperms, viz. 

 Dicotyledons and Monocotyledons, although 

 numerically unequal are structurally well distinguished 

 from each other. For the convenience of the student 

 we have arranged the principal characters in -a tabular form: 



