THE BARLEY GRASSES. 117 



had taken possession and grew luxuriantly, and was 

 called wheat grass, from its resemblance to wheat. It 

 goes in different parts of the country by a great variety 

 of names, as quake grass, quack grass, squitch grass. It 

 is important to destroy it, if possible. 



BEARDED WHEAT GRASS (Triticum caninum) is found 

 in woods and on the banks of streams, from New York 

 to Wisconsin and northward. It has no creeping root- 

 stalks, like couch grass. Spikelets four or five flowered; 

 glumes three-nerved, rachis rough and bristly on the 

 edges ; awn longer than the smooth flower ; leaves flat 

 and roughish. It is perennial, and flowers in August ; 

 grows from one to three feet high. It is sometimes 

 found in fields. 



A variety of couch grass, the Triticum dasystachyum, 

 is also found in Michigan and Wisconsin. 



WHEAT ( Triticum vulgare). See next chapter. 



EGYPTIAN WHEAT ( Triticum compositum) is cultivated 

 in gardens as a curiosity. 



44. HORDEUM. Barley Grasses. 



Spikelets one-flowered, with an awl-shaped rudiment 

 on the inner side, three at each joint of the rachis, the 

 lateral ones usually abortive or imperfect, short-stalked: 

 glumes side by side in front of the spikelets, slender and 

 bristle-form; lower pale convex, long-awnedj stamens 

 three ; grain long, adhering to the pales. 



SQUIRREL-TAIL GRASS (Hordeum jubatum) is widely 

 diffused over our salt marshes, and the shores of the 

 northern lakes, in Wisconsin, Iowa, and Minnesota, and 

 becomes a prairie grass in moist, level places. Stem 

 slender, smooth, from one to two feet high, with rather 

 short leaves, and low, lateral, abortive, neutral flowers, 

 on a short pedicel, short-awned, the perfect flower 



