FLORA OF 

 PENNSYLVANIA 



BY 



THOMAS CONRAD PORTER, D.D., LL.D. 



Late Professor of Botany in Lafayette College 



Edited 

 With the Addition of Analytical Keys 



BY 



JOHN KUNKEL SMALL, Ph.D. 



Curator of the Museums and Herbarium of the 

 New York Botanical Garden 



BOSTON, U.S.A. 



GINN & COMPANY, PUBLISHERS 



1903 



