iv PREFACE. 
All their localities have been credited as far as could be 
ascertained with accuracy. In McMurtrie’s History of 
Louisville, he gives Scolopendrium officinarum (Swartz), 
as found near Louisville, Ky. ‘This is certainly doubtful. 
The present work is not so full in localities as it ought 
to be, and it is the earnest desire of the author that local 
collectors should communicate with him regarding this 
matter, noting carefully the time and the place of finding 
any plant described in these pages 

whether on the higher 
ranges; whether on the declivities, or in the valleys, in the 
damp, rich woods, or along the banks of streams; whether 
on trees, or overhanging rocks; whether the rocks are 
sandstone, limestone, or of igneous formation. Notes 
can not be too careful or minute. 
This is merely a beginning of what can be accomplished 
with the aid of local collectors. We hope in a little time 
to be able to determine the locality and range of every 
species and variety indigenous to the State. 
I now take this opportunity to thank my botanical friends 
for the kind assistance they have given me in this work— 
Mr. J. C. Martindale, of Camden, New Jersey, Mr. John 
H. Redfield, of Philadelphia, Prof. D. C. Eaton, of Yale 
College, Prof. Coulter, of Hanover College, Indiana, Prof. 
Hussey, a Purdue University, Lafayette, Ind., Mr. Chas. 
E. Faxon, and Mr. G. E. Davenport, of Boston. I am 
especially indebted to Mr. Davenport for his valuable hints 
regarding the nomenclature and for criticisms on the illus- 
trations. 
