August, 1955 Evers: Hiv Prarrizs or ILLiNots 369 
* VISITED AND DESCRIBED 
x SEEN, BUT NOT VISITED 
NOR DESCRIBED 
1o_5 0 10 20 30 40 MILES 
SS SSSSSS———4 
Fig. 1.—Location of the Illinois hill prairies which the author visited and of those which he 
saw only from a distance during the field work for th’s report. Hill prairies are most numerous 
on bluffs that trend northwest and southeast and have upper slopes facing the southwest. Bluffs 
of tributary streams were not examined for occurrences of hill prairies. 
