CHAP, v.] RELATIONSHIP AMONGST PLANTS. 183 



In the Dicotyledons alone there are over two hundred 

 such Natural Orders, that is, Dicotyledonous plants can 



Fig. 55- One of the honeysuckles (Lonicera glauca), a typical 

 Dicotyledon, having the corolla gamopetalous and irregular ; stamens 

 five, epipetalous ; ovary inferior. The opposite pairs of leaves are 

 connate, or grown together for some distance. (Natural size.) 



be broken up into over two hundred groups, each cha- 

 racterized by the possession of certain structural features 



