EXERCISE 6 (Continued) 



tt 



FIG. 9. The Structure of an Ear of Corn. I. A young ear cut through the middle lengthwise. Sk, 

 Sk, the main stalk; Sk', a short branch which bears the ear; Sh, sheathing of lower part of the leaf which 

 enfolds the whole ear and its husks; B, blade of the same leaf; R. G, rain-guard which keeps the rain 

 from running into the sheath and promoting decay; H, the "husks" or large, leaf-like bracts around the 

 ear; Sg, stigmas (the "silk") protruding beyond the husks. About one-third natural size. II. A spikelet 

 oif the same ear, showing the bracts (C, C', D, D', E, E'), and the ovary (O) and the lower part of the 

 tyle {SYV of the single pistil. Enlarged. III. Upper part of the stigma of the same, showing the 

 delicate hairs that cover it. Enlarged. (Sargent.) 



References. Carrier, Lyman. U.S.Dept. Agr! Bui., No.461. Ward, H. M., 

 1908, Grasses (Cambridge University Press). Sargent, F.L., 1899, Corn Plants 

 (Houghton Mifflin). Hitchcock, A. S., 1914, Text-book of Grasses (Macmillan). 

 24 



