PREFACE. 



I have made use, also, of a catalogue of the trees 

 growing in Woodland Cemetery, prepared many 

 years ago by Mr. John W. Van Cleve. 



Besides its general scientific value, such a cata- 

 logue of the plants of the Miami Valley will, of 

 course, be exceedingly useful and convenient to all 

 resident botanists who make exchanges and accumu- 

 late herbaria. It is thought, also, that it may prove 

 of service to pupils in the High Schools and other 

 institutions of learning while pursuing the usual 

 course of instruction in Botany. 



It is my desire, at an early day, to issue a revised 



edition of this Flora, which shall be complete and 



exhaustive. In it, also, I propose to indicate the 



locality of species which are rare and not common to 



the whole region. That this may be done in the 



best manner possible, all lovers and students of 



Botany living in every part of the Miami Valley, 



are requested to furnish me with lists of additional 



species, and with such other information as may be 



available for this purpose. 



A. P. Morgan. 



Dayton, Ohio, April lo, 1878. 



