328 



GRASSES OF IOWA. 



DESCRIPTION. 



Wheat. An annual, with terete, simple culms, 2 to 5 feet (5-14 

 dm.) high. Leaves narrowly lanceolate, striate, usually scabrous on the 

 upper surface. Sheaths striate, smooth; ligule short, truncate. Spike 3 

 to 6 inches (7-14 cm.) long, dense, four-sided, axis compressed, rather 



(I 



Fig. 232-a. 



a— 1, Polish Wheat. Triticum Poloni- 

 cum; 2, Bearded Spelt. Triticum sati- 

 vum Spelt a (Hackel. ) 



Fig. 232-b. 



b — 1, German Wheat. Triticum sativum 

 dicoccum; 2, One-grained Wheat. Triticum 

 riionococcum. (Hackel.) 



broad, margins hirsute; spikelets broadly obtuse, three to five-flowered ; 

 glumes ventricose, obtuse, mucronate or awned. 



Wheat is grown in all parts of the state. Winter wheat succeeds 

 best in southern and eastern parts of the state ; summer wheat in' north- 

 western Iowa. 



DISTRIBUTION. 



Iowa. Ames (Fairfield, Stewart, Weaver, Pammel, Sirrine, Car- 

 ver) ; Boone (Carver) ; 1123 and 1171 (Alden (Stevens). 



