GRASSES OF IOWA. 321 



North America. Minnesota (Vernon Center, Pammel 2), Kan- 

 sas, Nebraska (McCook 219, Aurora 55, Alma 56, Pammel), Colorado 

 (Ft. Collins, Crandall; Malta, Pammel and Stanton 225; Palmer 

 Lake Pammel), Wyoming (Burnt Fork, Pammel and Stanton; Pied- 

 mont, Pammel; Pine Bluff, Pammel, Johnson, Lummis and Buchanan), 

 Texas, Utah (Salt Lake City and Echo, Pammel, Johnson, Buchanan 

 and Lummis; White Rock Agency and Provo River, Pammel and Stan- 

 ton; Black's Fork, Pammel ; Southern Mt., Siler) and Arizona; north to 

 Montana and Saskatchewan. 



5 AGROPYRON OCCIDENTALE VAR. MOLLE. PAMMEL. NOV. COMB. 



Agropyron spicatum molle Scribner and Smith. Bull. U. S. Dept. Agrl. 

 Div. Agros. 4: 33. 1897. 



DESCRIPTION. 



Soft Western Wheat Grass. Culms 1 to 4 feet high, with 

 compressed, acute spikelets; culms rigid, erect and striate; leaves rough- 

 ish on the margins, brown nodes; sheaths striate, smooth, shorter than 

 the internodes; ligule short; blades erect, separating, rigid, bluish green; 

 scabrous on the margins and along the prominent nerves. Spikes ex- 

 serted 3 to 7 inches (7-20 cm.) long. Spikelets pedicellate, greenish, \ 

 to 1 inch (iiy-3 cm.) long; empty glumes and rachis more or less villous 

 and pubescent, lanceolate, acuminate, scabrous on the nerves. Flowering 

 glume 4 to 6 lines (8-12 mm.) long, narrowly lanceolate, acute or acu- 

 minate; palea a little shorter than the flowering glume. See figure 226, 

 on page 320. 



DISTRIBUTION. 



Iowa. Ontario (F. W. Faurot 3274). Introduced. 

 North America. The Saskatchewan to Colorado and New Mexico, 

 and westward to Idaho and Washington. 



6. AGROPYRON PSEUDO-REPENS. 



Agropyron pseudo-repens Scribn. and Smith. Bull. U. S. Dept. Agrl, 1 

 Div. Agros 4: 34. Scribner. Bull. U. S. Dept. Agrl. -Div. Agros. 17: 296. 

 f.592. 1899. 



(In the past very frequently it has been referred to as Agropyron 

 repens by many American collectors.) 



DESCRIPTION. 



An erect, rather stout perennial, \\ to 4^ feet (3-9 dm.) high, from 

 creeping root-stocks, with flat, scabrous leaves, and erect spikes 4 to 8 

 21 



