258 



GRASSES OF IOWA. 



DISTRIBUTION. 



Iowa. Blue Grass (Barnes) ; Wild Cat Den (Reppert). 



North America. Nova Scotia and New Brunswick, southward to 

 Vermont (Charlotte, Pringle), Pennsylvania and westward to Minne- 

 sota (Itaska Lake, Sandberg). 



5. POA TR1VIALIS. 



Poa trivialis L. Sp. PI. 67. 1753. Watson and Coulter. Gray. Man. 

 Bot. 665. (6th ed) 1890. Scribner. Grasses of Tenn. Bull. Univ. Tenn. 

 Agrl. Exp. Sta. 7: 108. /. 145. 1894. Bull. U. S. Dept. Agr. Div. Agros. 17: 

 243. /. 539. 1899. Beal. Grasses of N. A. 2. 531. 1896. Nash in 

 Britton and Brown. 111. Fl. 1: 204. /. 46S . 1896. 



Fig. 179. PoadebUis—a, empty glume D ; b, 

 flowering glumes. (Div. Agros. U. S. Dept. 

 Agr ) 



Fig. 180. Poa trivialis— a, empty glumes; 

 b, flowering glumes, i Piv. Agro.-. U. S. 

 Dept. Agr. ) 



