144 SILVA OF NORTH AMERICA. ROSACEZ. 
Crategus Illinoiensis grows in open woods along the gravelly banks of small streams in Stark and 
Peoria counties, Uhnois, where it is not common. It was first collected in May, 1889, by Mr. Virginius 
H. Chase. 
EXPLANATION OF THE PLATE. 
Pirate DCLXXXVII. Crataeus ILLINoIENsIS. 
1. 
. Vertical section of a flower, enlarged. 
ND OF Bm WLW b 
A flowering branch, natural size. 
. A calyx-lobe, enlarged. 
. A fruiting branch, natural size. 
. Cross section of a fruit, natural size. 
. A nutlet, side view, enlarged. 
. A nutlet, rear view, enlarged. 
