128 



GRASSES OF IOWA. 



2. STIFA COMATA. 

 Stipa comata Trin. and Rupr. Mem. Acad. St. Petersb. VI. 5: 75. 

 1842. Beal. Grasses of N. A. 2: 216. 1896. Nash in Britton and Brown. 

 111. Fl. 1: 138. /. 312. 1896. Scribner. Bull. U. S. Dept. Agrl. Div. 

 Agros. 17: 129. / 425. 1899. Vasey Contr. U. S. Nat. Herb. 3: 52 



description'. 



Western Stipa. Need- 

 le Grass. A rather 

 stout, erect, caespitose 

 perennial, ii to 4 feet 

 (3-9 dm.) High, with 

 mostly involute leaves, and 

 loosely-flowered panicles, 8 

 to 12 inches (16 to 24 

 cm.) long. Spikelets with 

 nearly equal, long-attenu- 

 ate-pointed, empty glumes 

 about 12 lines (24 mm.) 

 long, and thinly pubes- 

 cent flowering glumes 

 about b lines (12 mm.) 

 long. Awn slender, 2-i to 

 3 inches (8- 10 cm.) long, 

 strongly flexuose or vari- 

 ously curled and twisted. 

 May to September. 



A rare species in Iowa, 

 only reported from one 

 locality, Sioux City by 



Fro. 9i. Stipa comata— a, empty or lower glumes ; Miss Wakefield and Pro- 

 b, pubescent flowering glume and pointed callus.! Div. , U ' 1 1 



« r T a * » 1 , lessor iiitcncocK. 



Agros. U. 8. uept. of Agrl. ) *wwj 



DISTRIBUTION. 



Iowa. Sioux City (Hitchcock). 



North America. From western Iowa, Dakotas (S. D., Edgemont, 

 Stanton), Wyoming (Uintah Mountains, Mud Creek, 1542, Pam- 

 mel, Johnson, Buchanan and Lummis; Sheridan County, Pammel, 160; 

 New Castle, Pammel, 2; Sherman, Pammel, 2); Montana (Dillon, 

 Shear, 334), Nebraska (McCook, Pammel, 383); Colorado (Ft. Col- 

 lins, Crandall ; La Poudre River, Pammel ; Ft. Morgan, Pammel ; Colo- 

 rado Springs, Pammel, 223; Greenland, Pammel and Stanton); 



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