EXPLANATORY 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 marked 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 
botanical 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 
to the 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. 
n perennial. 
h frutescent. 
