Steudel. 

 Sullivanl. 

 J. Taylor. 



ToiTey. 



Torrey and Gray, 



Tournefort. 



Trinius. 



Tuckerman. 



Vaillant. 



Ventenat. 



Villars. 



Wahlenberg. 



Walter. 



Weber. 



Willdenow. 



Wilson. 



Wulfen. 



n. SIGNS USED IN THIS WORK. 



(1) An annual plant. 



(2) 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; (0 for inches; of seconds ("); for lines, the (English) line being the 

 twelfth part of an inch. 



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



