INTRODUCTION. 
Hawover, Inp., November, 1871. 
Pror. Cox:—The list of flowers furnished in this report, 
is, we think, but partial, and a thorough canvass of the hills 
and valleys, flat lands, marshes and pools, would largely ~ 
increase it; placing it at least 200 to 300 species in advance 
of its present standing. This estimate, though somewhat 
large, is not beyond what we think reasonable; for our 
researches thus far have been confined to rather a small area, 
say one-sixth to one-fifth of the county. "The supposition 
that there is in the county a large number of plants not 
mentioned in the Catalogue, is founded on the fact, that each 
new locality we have visited has disclosed several species 
differing from those found in other places not far distant, 
and also many plants unknown to us, that had not arrived 
at the analyzable period. The supposition is further 
strengthened by the great diversity of surface to be found 
in this county. From the river bluffs of the Ohio, creviced 
in all directions by ravines and gulleys, there rolls back a 
comparatively unbroken stretch of flat land—this again is 
gradually changed, and the country becomes diversified by 
brooks, and creeks, along whose banks flowers flourish in 
great abundance. 
The Cyperacee (Sedges,) Graminee (Grasses,) Filices 
(Ferns,) and Lichens, are all well represented in this county ; 
and an interesting field of labor is opened to the Botanist. 
