DROSERA ROTUKDIFOUA. 



C H AP T E R IV. 



CALYCIFLOR^. 



This subclass contains those Dicotyledons in which 

 the perianth is double, the petals separate, and the 

 stamens either perigynous or epigynous. 



CELASTRACE^. 



This order contains one British species, the Common 

 Spindle Tree, Euonymus Europaus. The flowers 

 secrete honey, and are frequented by Diptera (Flies) 

 and Hymenoptera, especially the former. They are 

 proterandrous. 



RHAMNACE^. 



The Vine and the Virginian Creeper belong to this 

 order ; but we have only one British genus, Rhamnus, 



