GRASSES OF IOWA. 259 



DESCRIPTION. 



Rough Stalked Meadow Grass. An erect perennial, i to 3 

 feet (2-7 dm.) high, with Bat leaves, open panicle, and no conspicuous 

 rootstock. Culm rough or scabrous near the summit, not flattened. 

 Sheaths a little scabrous; ligule 2 to 3 lines (4-6 mm.) long; leaf-blade 

 3 to 6 inches (6-12 cm.) long, about 2 lines (4 mm.) wide, acute. 

 Panicle narrowly pyramidal, 3 to 8 inches (6-16 cm.) long. Spikelets 

 ovate, usually two-flowered. Empty glumes strongly keeled, ver\ acute, 

 the lower one-nerved, the upper broader and three-nerved; flowering 

 glume ovate-lanceolate, strongly five-nerve*d, fringed on the keel with 

 silky hairs, otherwise smooth. Palea smooth. Meadows and roadsides. 

 June to August. 



Poa trivialis occurs in southeastern Iowa as far north as Ames. 

 The Ames and Cordova localities indicate that the grass is native. It 

 is usually regarded as a native of Europe. 



DISTRIBUTION. 



Iowa. Sedan 3380, Ames 938 (Pammel) ; Ames 668 (Pammel and 

 Combs). 



A orth America. Meadows and roadsides through eastern, south 

 ern and northern United States; Ohio (Columbus, Sullivant; Lancaster, 

 Dr. Bigelow), Wisconsin (La Crosse, Pammel) ; Lineville, Centerville 

 ( Shimek). 



General. Great Britain, Germany to North Africa, Siberia, Da- 

 huria. 



6. POA WOLFII. 



Poa Wolfii Scribner. Bull. Torr. Bot. Club. 21: 228. 1894. Bull. 



Univ. Term. Agrl. Ex. Sta. 7: 110. pi. 38. f. 149. 1894. Britton and 



Brown. 111. Fl. 1: 207. /. 476. Britton Man. 140. 



P Wolfii (Vasey) Scribner. Beal. Grasses of N. A. 2: 553. (2d ed.) 

 Pammel and Scribner. Proc. Soc. Prom. Agrl. Sci. 17: 102. Contr. 



I.S. C. Bot. Dept. 3. 



DESCRIPTION. 



Wolf's Meadow Grass. A slender perennial, one to three feet 

 high, with a loose, nodding panicle. Sheaths rather loose, mostly shorter 

 than the internodes, the lower scarious ; ligule one-half a line long ; 

 leaf-blade three to six inches long, one to two lines wide. Panicle slen- 

 der, lax, three to six inches long, primary branches two to three, rarely 



