EXPLANATORT REMARKS. 



FoR the abbreviated characters of the flowers and the fruit, the 

 writer of this Prodromus is indebted to Dr. Muhlenberg's Catalogue. 

 The plants niarked with an asterisk (*) have not been found by the 

 author, but are inserted on the authority of others. All others not 

 so marked, have been actually collected by him, and most of them 

 preserved in his herbarium. The errours liable to be committed by 

 the student in the examination of plants, owing to the perplexity of 

 botanicai synonima, are obviated by adding both the generick and 

 specifick synonymes, when they have been known. 



C. stands for cultus, cultivated; and when placed opposite to the 

 name of a plant denotes that it is commonly cultivated. 



Cic. stands for Cicur, naturalized; and when placed opposite 

 tothe name of a plant, signifies that it was originally from foreign 

 countries, and has become as it were, indigenous. 



Hort. stands for Hortis, and signifies that the plants to which it 

 is prefixed, though natives of the United States, are not indigen- 

 ous in the vicinity of Philadelphia, but commonly found in gardens. 



© placed opposite the name of a plant signifies that it is an annual. 



% biennial. 



u perennial. 



h frutescent. 



