341] FLORA OF COLUMBIA AND VICINITY 99 



132. L. Italicum A. Br. Italian rye grass. 

 Alfalfa fields. 



Europe, thence to the United States. 



58. AGROPYRON Gaertn. Wheat grass. 



133. A. repens (L.) Beauv. Couch, quitch, quick, or 



QUACK GRASS. 



Waste places and fields; still uncommon. 

 Europe and Asia, thence to North America. 



134. A. spicatum (Pursh) Scribn. & Sm. Prairie wheat 

 grass. 



Summit of a ledge at the northwest corner of the water- 

 works dam, the only known station. 



Michigan and Manitoba to Oregon; Missouri to Texas. 



59. SEOALE L. Rye. 



135. S. cereale L. Common rye. 

 Frequent in waste places. 



Old World, thence to the New. 



60. TRITICUM L. Wheat. 



136. T. sativum vulgare (Vill.) Hack. [T. vzt/^are ViW.']. 

 Winter wheat. 



Occasionally adventitious. 



Old World, thence to the New. 



61. HORDEUM L. Barley. 



137. H. sativum hexastichon (L.) Hack. Six-rowed 

 barley. 



Rarely adventitious, but common as a weed in oatfields. 

 Old World, thence to the New. 



138. H. nodosum L. \_H. pratcfise Huds.]. 

 Roadsides, especially in hard clay; common. 

 Michigan to British Columbia and Alaska; Texas to 



California: Europe and Asia. 



139. H. jubatum L. Squirrel-tail grass. 

 Rare in waste places. 



Labrador to Alaska; New Jersey to California. 



