PREFACE. 1 1 



*0* In revising the sheets for the present impression, manj small errors 

 of the .press, most of them r^ating to accentaation, have now heen cor- 

 rected. - \ 



January, 1870. 



SIGNS AND ABBKEVIATIONS. 



The Signs aud Abbreviations employed in this work are few. 

 The signs are: 



® for an annual plant. 

 ® « a biennial plantr 

 ^ ?' a perennial plimt. '~w 



The agns for degrees, minutes, and seconds are used for'-feet, inches, 

 and lines, the latter twelve::to ihe inch. 



Thus 1° means a fcot in length or heightj^fe, ; 2', two inches^ S", three 

 lines,-or a qun'ter of an inch. "The latter sigiijs seldom used in thb work. 

 The dash hetweea two figures, as " 5-l&,"-ineans from 6\e to ten, &c. 

 ': " Fl." stands fo* flowers or flowering. " 



' "Cult."^-*' for cultivated. "- !-■- 



" Nat." ;»' for naturalized. ' * 

 :» N., E.,' 8., W." for North, Eastj-'South, and West. 

 " -The geographical, abbreviations, such ay .'SEu." fer Europe, and the 

 common abbreviatitms for .the names of the Btates, need no~i)articuIar 

 explajDation. 



