ABBREVIATIONS AND SIGNS. 



AUTHORS' NAMES-(CONTINUED). 



Richardson. 



Roemer. 



Salisbury. 



Schkuhr. 



Schrader. 



Schreber. 



Schultes. 



Schweinita. 



Scopoli. 



Scringe. 



Solander. 



Sprengel. ' 



Steudel. 



Sullivant. 



Thunberg. 



Torrey. 



Torrey & Gray. 



Tournefort. 



Trautvetter. 



Trinius. 



Tuckennan. 



Vaillant. 



Ventenat. 



Villars. 



Wahlenberg. 



Walpers. 



Walter. 



Wangenheiia. 



Willdenow. 



Withering. 



Wttlfen. 



