16 



GRASSES OF IOWA. 



resented in the figures of Nees and Doell. The lower glume becomes 

 very hard and rigid, excepting its margins and firmly embraces the lower 

 part of the kernel. 



Fig. 8. Above, Red Cob Sweet corn; 1-3, views of kernel ; below, Hybrid Sweet corn; 

 1-4, views of kernel. (Charlotte M. King. ) 



"The ears upon the plants raised in the Botanic Gardens were very 

 variable, from scarcely two inches to four inches in length and three- 

 fourths of an inch broad, tapering slightly to an acutish apex, and with 



