130 GRASSES OF IOWA. 



DISTRIBUTION. 



hnva. Winneshiek County, Shelby County (Fitzpatrick) ; Har- 

 court (Danielson); Alden (Stevens); 945, Battle Creek (Preston); 

 Ames (Bessey, Carver, E. R. Wilson, 177 Ball, Weaver, Crozier, Sir- 

 rine 1147 and 1149, Louthan) ; Iowa City (Hitchcock) ; Jewell Junc- 

 tion (Carver) ; 3278, Ontario (Faurot) ; Marshalltown (Eckles) ; 530, 

 Muscatine (Reppert) ; Sioux City (Miss Wakefield) ; Johnson County, 

 Cedar Rapids, Lyon County (Shimek) ; Van Cleve (Warden) ; 3252, 

 Grundy Center (Miss Paddock) ; 3052, Steamboat Rock (Miss King) ; 

 672 Missouri Valley, Council Bluffs, 1466 De Witt, 1429 Carroll, 

 1277 Council Bluffs, 1163 Ames, Dubuque (Pammel) ; Clear Lake 

 (Shimek), 18 Marshall County (Ball), 3335 Marathon (Roberts). 



North America. From Wisconsin (La Crosse, Pammel), Illinois, 

 to Missouri, Kansas, Nebraska, Dakotas (S. D., Aberdeen, Griffith, 

 820; N. D., Fargo, Bolley), and Minnesota to New Mexico (Glori- 

 eta, Vasey), Manitoba to British Columbia. 



3. MUHLENBERGIA. 



Muhlenbergia Schreb. Gen. PI. 44. 1789. Hackel in Engler and 

 Prantl. Nat. Pflanz. Fam. II. 2: 47. /. 45. Bentham and Hooker Gen. PI. 

 3: 1143. Scribner. Bull. U. S. Dept. Agrl. Div. Agros. 20: 65. /. 43. 



Muhlenbergia Schreb. Endlicher. Gen. PI. 88. 



Vaseya Thurb. Proc. Acad. Nat. Sc Philad. 1863: 79. Watson Bot. 

 Cal. 2: 278. 



Podosoemum Desv. Nuov. Bull. Soc. Philom. 2: 188. 1813. 



Calycodon Nutt. Jr. Acad. Philad. II. 1: 186. 1817. 



Clomena Beauv. Agros. 28. pi. 7. f. 10. 1812. 



losagris Beauv. Agros. 29. pi. 8. f. 3. 



Spikelets 1 -flowered, in contracted or rarely in open panicles. 

 Empty glumes mostly acute or bristle-pointed, persistent, usually thin; 

 the lower rather smaller or minute. Flower very sliort-stalked or ses- 

 sile, the glume and palet usually minutely bearded at base, herbaceous, 

 deciduous with the enclosed grain, often equal, the glume 3-nerved, 



