XIV 



ABBREVIATIONS AND SIGNS. 



Steudel. 

 . Sullivant. 

 J. Taylor. 

 Torrey. 



Torrey and Gray. 

 Toumefort. 

 Trinius. 

 Tuckerman. 

 Vaillant. 

 Ventcnat. 

 Villars. 

 Wahlenberg. 

 Walter. 

 Weber. 

 Willdenow. 

 Wilson. 

 Wulfen. 



H. SIGNS USED IN THIS WORK. 



(J) An annual plant. 

 A biennial plant. 

 U. A perennial plant. 

 ? A mark of doubt. 



! A mark of affirmation or authentication. 



1, 2', 3". To save space, the sign of degrees () is used for feet; of min- 

 utes; for inches; of seconds ("); for lines, the (English) line being the 

 twelfth part of an inch. 



The dash - between two figures, as 5-10, means from 5 to 10, &c. 



