CLASSIFICATION OF ANGIOSPERMS. 361 



The leaves of the garden Hlac (Syringa z'ltlgaris) contain a 

 crystalHne gkicoside, syringin, and syringopicrin, both of which 



Fig. 172. Carolina pink (Spieelia marilandica) showing the rhizome bearing two 

 branches with opposite leaves and flowers in terminal scorpioid cymes.— After Carson. 



are probably also found in other species of Syringa as well as 

 the bark and leaves of privet {Ligustrum viilgare) which latter 

 plant is extensively used for hedges. 



