126 



GRASSES OF IOWA. 



Stipa spariea Hooker Fl. 

 Bor. Am. 2:237. 1840. (Not 

 of Trinnius.) 



description'. 



Green Stipa. Feather 

 Bunch Grass. A slen- 

 der or rather stout, caes- 

 pitose perennial, erect pan- 

 icles, 2\ to 5 feet (5- 

 10 dm.) high, with invo- 

 lute-pointed leaves and 

 narrow, contracted pani- 

 cles 6 to 10 inches (12-20 

 cm.) long. Spikelets with 

 nearly equal, subulate- 

 pointed, empty glumes, 3 to 

 4^ lines (6-9 mm.) long, 

 and hairy or pilose flower- 

 ing glume, which is about 

 l\ lines (5 mm.) long, 

 and has a short, obtuse 

 callus. Awn about 12 

 lines (24 mm.) long, fin- 

 ally separating from the 

 glume. June-August. 



Feather bunch grass has 



Fig 91 Stipa viridula -a, outer or lower glumes; been introduced in a few 

 b. sharp pointed callus of the flower. (Div. Agros. U. . . 1 -i j 



s Dept. Agri ) places aiong the railroads. 



distribution. 



Iowa. Ames (Sirrine, P. H. Rolfs, C. A. Wilson, E. R. Wilson, 

 Pammel, Combs and Ball). 



North America. Introduced into Iowa; from western Minnesota, 

 tf\'ebra>ka (Alma, Pammel, 161; McCook, Pammel, 375). south to 

 Kansas and New Mexico, Colorado (Ft. Collins, Crandall, Pammel; 

 Ouray, Shear, 1160; Greeley, Pammel; Leadville, T release) ; Utah 

 (Uintah Mountains, Kamas, Pammel and Stanton, 220; Uintah Moun- 

 tains, Mud Creek, Pammel, 916; West Duschene, Pammel, 217) ; 

 Wyoming (Uintah Mountains, Fuller's Ranch, alt. 8,000 ft., 917, 

 Pammel, Johnson, Buchanan and Lummis; Sheridan, Pammel; New 

 Castle, Pammel, 3) : Montana (Bonner, Sandberg, Heller and Mc- 

 Dougal 986), and California. British Columbia to Manitoba. 



