EXPLANATION 



vii 



names," or those used by nurserymen and seedsmen in the sale 

 of their stock. 



I should further explain the reason for omitting ligatures and 

 using such words as peony, spirea, dracena, cobea. As techni- 

 cal Latin formularies, the compounds must of course be retained, 

 as in Pceonia officinalis, Spircea Thunhergi, Draccena fragrans, 

 Coboea scandens; but as Anghcized words of common speech 

 it is time to follow the custom of general hterature, in which 

 the combinations se and oe have disappeared. This simphfica- 

 tion was begun in the " Cyclopedia of American Horticulture " 

 and has been continued in other writings. 



L. H. BAILEY. 



Ithaca, New York, 

 January 20, 1910. 



