152 DESCRIPTION OF ASTER; DIVARICATI 
Cols 
Aster fimbriatus 
FIG. I5. 
1897 and 1898 ; the only plant seen on which the fimbriation ex- 
tended to every head was a plant of 1898. Heads in which every 
ray is not merely fimbriate but even slit to the base into three capil- 
lary rays, are rare but do occur occasionally. More often, some one 
> 
