288 GRASSES OF IOWA. 



DISTRIBUTION'. 



Iowa. Nodaway River (Stewart) ; Mason City 3132 (Miss King 

 and Brown) ; Steamboat Rock 3026 (Miss King) ; Ames (Hitchcock, 

 Thurber, Bessey, Crozier, Chas. Wilson, 121 and 123 Ball; see Shear, 

 Bull. U. S. Dept. AgrL, Div. Agros. 23:40) ; Winterset, Boone (Car- 

 ver) ; Marshalltown (Eckles) ; Colfax (Mead) ; Story City, Sioux 

 City, 662 Grand Junction, Hawarden (Pammel) ; Mt. Pleasant 772 

 (Mills) ; Emmet County 105 1, Armstrong (Cratty) ; Lebanon (Sam- 

 ple) ; Tama County (Sirrine) ; Appanoose County, Winneshiek County 

 (Fitzpatrick) ; Iowa Lake 853 (Pammel and Cratty) ; Winneshiek 

 County (Bartsch) ; Lebanon 26 (Ball and Sample; see Shear, Bull. U. 

 S. Dept. AgrL, Div. Agros. 23:40) ; Fayette County (Fink; see Shear, 

 Bull. U. S. Dept. AgrL Div. Agros. 23:40) ; Decatur County (Fitz- 

 patrick; see Shear, Bull. U. S. Dept. AgrL Div. Agros. 23:40); 

 Myron (Miss King); Hackberry Grove (Shimek) ; Quarry (Pam- 

 mel) ; Morgan, Decatur County (Shimek) ; Skunk River (Glendale) ; 

 Ft. Dodge (Oleson). 



North America. New England to Florida; Ohio (Baltimore, 

 Horr; Columbus, Sullivant), Kentucky (Harlan County, Kearney 

 276), west to Wyoming and Colorado (Golden, alt. 7500 ft., Pammel 

 261), south to Texas. 



General. Kamtschatka. 



3. BROMUS PURGANS VAR. 1NCANUS. 



Bromus purgans var. incanus Shear. Bull. U. S. Dept. Agrl. Div. 

 Agros. 23: 41. 1900. 



DESCRIPTION. 



Wood Chess or Wood Brome Grass. This is very near B. pur- 

 gam latiglumis, differing from it in having the sheaths densely soft 

 pilose-pubescent. It also passes into B. Porteri var. lanatipes in the south- 

 west. It is generally separated from that by its broader leaves and nar- 

 rower empty glumes, which are, like the flowering flumes, sparsely 

 pubescent. July to August. 



