44 



Hordeum jubatum L. 



lowii: Carroll, altitude 1,240 feet; Sioux City, altitude 1,123 feet; Council Bluffs, 



altitude 990 to 1,000 feet; Logan, altitude 928 feet; Jefleison, altitude 1,100 feet; 



abundant weed in uieadovvs, pastures along roadsides, and along railroads. 

 Nebraska: Hastings, along railroads; McCook, altitude 2.517 feet, along railroads, 



saudy bottoms of Kepublican River. 

 Colorado: Fort Morgan, altitude 4,500 feet; Fort Collins, altitude 4,978 feet; along 



railroads, seepage swamps, and flats, abundant. 



H. pusillum Nutt. 



Iowa : Council Bluffs, altitude 1,000 feet, introduced. 



Nebraska: Crete, altitude 1,364 feet; Hastings, along railroads, dry prairie soil; 



McCook, altitude 2,517 feet, along railroads and prairies. 

 Colorado: Denver, altitude 5,294 feet, prairies; Fort Collins, altitude 4,978 feet. 



Elymus canadensis L. 



Iowa: Carroll, altitude 1,240 feet; Sioux City, altitude 1,122 feet, loess bluffs; 



.Jefferson, altitude 1,11S feet; Logan. 

 Nebraska : Lincoln, altitude 1.159 feet; Crete, altitude 1,364 feet, dry prairies, along 



railroads; McCook, altitude 2,517 feet, flood plains of Eepublicau River. 

 Colorado : Fort Collins, altitude 4,984 feet, along railroads ; Colorado Springs, altitude 



5,978 feet; Rists Canyon, Larimer County, altitude 6,500 feet, dry open places. 



E. glaucus Buckley. 



Nebraska: McCook, altitude 2,517 feet, dry places, flood plains Republican River. 



E. macounii ^'asey. 



Colorado : Greeley, altitude 4,770 feet, river bottoms : Fort Collins, altitude 4,900 

 feet, flats. Cache la Poudre River, common. The species has also been Ibuud 

 near Jewell Junction, Iowa (Carver), in what was once an old lake bed. 



E. nitidus Vasey. 



Colorado: Near Golden, Clear Creek Canyon, altitude 6,000 to 7,000'feet. in yellow 



pine woods. 

 E. robu.stus Seribn. and Smith. 

 Iowa: Carroll, altitude 1,240 feet. 



E. striatus AVilld. 



Iowa: Carroll, altitude 1,240 feet; Sioux City, altitude 1,122 feet; Jefferson, altitude 

 1,118 feet ; Council Bluffs, altitude 990 feet. 



E. triticoides Buckl . 



Colorado : Near Golden, Clear Creek Canyon, altitude 7.500 feet, in woods. 



E. virglnicus L. 



Iowa: .Jefferson, altitude 1,118 feet; Sioux City, altitude 1,122 feet; Council Bluffs, 

 altitude 990 feet; Logan, altitude 928 feet; Missouri Valley, altitude 1,022 feet. 



Sitanion elymoides Raf. 



Nebraska: McCook, aUitiide 2,517 feet, abundant, flood i)lains b'epublicau River. 



Colorado: Denver, altitude 5,294 feet, abundant, dry plains; Gulden, altitude 7,000 

 i'eet; Mount Zion,near Golden, altitude 7,500 feet; Colorado Springs, altitude 

 5,978 feet; North Cheyenne Canyon, r.ear Colorado Springs, altitude 6,500 feet; 

 Fort ilorgau, altitude 4,500 feet. 



