158 



GRASSES OF IOWA. 



2. SPOROBOLUS VAGINAEFLORUS. 



Sporobolus vaginaeflorus Wood. Class-book. 775. 1861. Scribner. 

 Grasses of Tenn. Bull. Univ. Tenn. Agrl. Exp. Sta. 7: 72. /. 92. 1894. 



Sporobolus vaginaeflorus . (Torr.) Wood. Nash in Britton and Brown. 

 Ill Fl. 1: 152. /. 244. 1896. Scribner. Bull. U. S. Dept. Agrl. Div. Agros. 

 17: 170, /. -/66 1899. 



Sporobolns minor Vasey Watson and Coulter, Gray. Man. 646. 1890. 

 (6th ed.). Contr. U. S. Nat. Herb. 3: 60. 



Vilfa vaginaeflora Torr. A. Gray. Gram, and Cyp. 3: 1834. 

 description. 



Sheathed Rush Grass. 

 A slender, caespitose annual, i 

 to 3 feet (1^-4 dm.) high. 

 with very narrow, short 

 leaves, and simple, few-flow- 

 ered, terminal and axillary, 

 spike-like panicles which are 

 about I inch (2 cm.) long, 

 and mostly enclosed in the 

 somewhat inflated leaf- 

 sheaths. Spikelets 1 to 2 

 lines (2-4 mm.) long. Dry 

 fields and waste places. Aug- 

 ust-September. 



DISTRIBUTION. 



Lava. 755, Manchester 

 ( Ball) ; 1014, Carroll 

 (Simon); 711, Forest City 

 (Peters) ; Muscatine (Rep- 

 pert) ; 728, Dixon (Snyder) ; 

 Lawler (P. H. Rolfs); Cor- 

 nell (Smith) ; 750, Dallas 



Center (Rhinehart); Carroll, 

 Ames, Cedar Rapids, 103 



Ames, 225 Carnarvon, Ona- 



wa, 126 Carroll, Sioux City, 



M. ,r n „ , „, - Fig. 112. Sporobolus vaginaeflorus— &, empty 



lSSOUri^ Valley, Lagle drove. glume . h> flower ing glume and palea. (Div. of 



Mason City (Pammel) ; Iowa Agros. u. s. Dept. Agrl.) 

 City, Cedar Rapids (Hitchcock) ; New Hampton (P. H. Rolfs) ;.I267. 

 Wild Cat Den (Pammel and Reppert) ; Davenport (Barnes and 

 Miller) ; Indianola (Carver) ; Moscow (Hitchcock). 



A orth America. From Vermont, New York, south to North Caro- 

 lina; Georgia, Tennessee, Mississippi (Starkville, Tracy), Alabama, 

 Texas, Missouri, South Dakota and Wyoming. 



