690 



ZANTHORHIZA ZANTHOXYLUM 



does. The popular name refers to the aright yellow of the roots and 

 stem when cut. The generic name is sometimes spelt "Xanthorrhiza." 



ZANTHORHIZA APIIFOLIA. 



ZANTHOXYLUM. RUTACE.E, 



A widely spread genus of shrubs and trees belonging to the Rue 

 family, of which some half a dozen hardy species are in cultivation. 

 Their leading characteristics are the strong, aromatic, sometimes 

 unpleasant odour of the crushed leaves, the spiny young branches and 



