X 
ABBREVIATIONS. 
Nces. 
Nntt. 
Pers. 
Pursh. 
Raf. 
R. Br. 
Salisb. 
Schott. 
Small. 
Smith. 
Torr. & Gray, 
lourn. 
Vent. 
Walt. 
Wang. 
Web. 
Willd. 
= Nees von Esenbeck. 
Nuttall, Thomas. 
Persoon, Christian Hendrick. 
Pursh. 
Rafinesque-Schmatz, C. S. 
Brown, Robert. 
Salisbury, Richard Anthony. 
Schott, August. 
Small, A. 
Smith, William. 
Torrey, John ; Gray, Asa. 
Tournefort, Joseph Pitton de. 
Ventenat, Etienne Pierre. 
Walter, Thomas. 
Wangenheim, A. J. von. 
Weber, Preidrich. 
Willdenow, Carl Ludwig. 
