240 



GRASSES OF IOWA. 



Ftg 167. Eatonia Pennsylvanica—a, spikelet; 

 b, empty glumes c, spikelet. (Div. Agro=. V. S. 

 Dept. Agrl.) 



Fig. 168. Diarrhena Americana— a, spikelet; 

 b, empty glumes; e, flowering glumes. (Div. 

 Agros. U. S. Dept. Agrl.) 



Sioux City 1279. Council Bluffs, Dubuque, 1919 New Albin, Jeffer- 

 son 1364, Ottumwa, Story City 1041, Elmore, Minne. (Iowa-Minne- 

 sota line), Marshalltown (P;immel); Ames (Hitchcock, Pammel, 

 Fisher, Beardslee, 167 Ball, P. H. Rolfs); Shelby County (Fitzpat- 

 rick) ; Dysart (Sirrine) ; Bartlett (Chambers); Iowa City (Hitch- 

 cock) : Jewell Junction (Carver) ; High Bridge, Dallas County 

 (Shimek) ; Clear Lake, Johnson County (Shimek, Mi>s Linder) ; 

 Hamilton to Hancock County (Preston). 



North America. Newfoundland and Maine to Washington, south 

 to Georgia, Texas and Arizona; west to Wisconsin (La Crosse, Pam- 

 mel), Minnesota (Aitkin County, Sandberg), Missouri (Webster and 

 Valley Park, Pammel; St. Louis, Forest Park, Eggert), Colorado (Ft. 

 Collin-. Pammel), Wyoming (Sheridan County, Pammel). 



