234 GRASSES OF IOWA. 



distinctly three-nerved, scabrous on the keel, about •',' Line ( l\ mm.) 

 long. Palea scabrous on the keels. Grain oblong. June to October. 



Erdgrostis Purshii is a common roadside weed in all parts of the 

 state. The species occurs along roadsides, railroad embankments, and is 

 abundant in flood plains of streams. 



DISTRIBUTION. 



Iowa. Musactine, 34 (Ball); Winneshiek County (Goddard) ; 

 Steamboat Reck, 3170, 3355, Postville (Miss King); 3289, Boone 

 Viaduct (Pammei; , Dallas Center, 751 (Rhinehart); Wilton Junc- 

 tion, 2249, 2224, Webster C:*y. Marshalltown, Carroll, Ames, Sioux 

 City, Clinton, Eagle Grove, 1452 De Witt, South Dakota, opposite 

 Hawarden, 789 Dakota City, 788 Marshalltown, Cedar Rapids, Logan 

 (Pammei) ; Ames (C. A. Wilson, Sirrine, G^ard and Rich, Arthur, 

 Pammei, Kaufman, Beardslee, Hitchcock, Stewan) ; Fairfield, [62 

 (Ball and Sample) ; Fayette County (Fink) ; Indianola, Jewell Junc- 

 tion, Des Moines, Boone (Carver); Mt. Pleasant (Mills); Fairmont. 

 Silver Lake, State Line (Cratty) ; Keokuk, Johnson County (Shimek) : 

 Keokuk (P. H. Rolfs); Taylor County, 11 13 (Pool); Manche>:er 

 723 (Ball); Muscatine (Reppert); Fairmont, Minn., 7, near Io 

 Minnesota line (Cratty); Manchester (Ball); Cedar Rapids {. Mi- 

 ll all) ; Dixon, 717 (Snyder) ; Clinton, 270 (Ball) ; Birmingham, Sii 

 (Baldwin); High Bridge, Dallas County (Shimek); Iowa City ( \t 

 wood, Macbride, Hitchcock); Hamilton to Hancock County (!' 

 ton). 



North America. Ontario and Maine, Florida (Quincy, Combs, 

 432), to Kentucky (Harlan County, Kearney, 28), Illinois (Pullman, 

 Pammei; Le Claire County, Fggert), Wisconsin (La Crosse, C. M. 

 King and D. S. Pammei; L. H. Pammei, 3258), South Dakota, Ne- 

 braska (Knox County, Clements, 2731; Broken Low. Webber; Hast- 

 ings, Pammei), Indian Territory (near Ft. Smith, Ark., P. H. Rolfs), 

 Texas (Sherman, Pammei), Colorado (Alamosa, Clements 153). 

 California, Mexico (Parry and Palmer). 



6. ERAGROSTIS PECTINACKA. 



/iragrostis pectinacea Steud. Syn. PI. Gram. 272. 1854. 



Eragrostis pectinacea Gray. Watson and Coulter. Gray. Man. Bot. 

 661. 1890. (6th ed.) Scribner. Grasses of Tenn. Bull. Univ. Tenn. 

 Agr. Exp. Sta. 7: 98. /. 131. 1894. 



Eragrostis pectinacea (Michx.) Nees. Beal. Grasses of N. A. 2: 488. 

 1896. 



