GRASSES OF IOWA. 145 



DISTRIBUTION. 



Iowa. A single specimen is reported from Iowa, collected by Prof. 

 A. A. Crozier in the vicinity of Wall Lake. Whether this was a slip 

 in writing the label I do not know. No other collector has ever re- 

 corded it for this state. The specimen bearing this label was destroyed 

 in the fire. 



North America. South Dakota to New Mexico (Parry), Texas 

 to California (Vasey), Nevada (Pammel), Utah (East Duchesne, 

 Pammel and Stanton; West Duchesne, Pammel and Stanton), Colo- 

 ratio (Ft. .Morgan, Pammel; Denver, Ft. Collins, E. D. Ball; New 

 Windsor, Osterhout, 2378; Ft. Collins, Crandall; Larimer County, 

 Crandall and Cowen ; Marshall Pass, Tracy, 454); Wyoming (Sher- 

 man, Pammel; Egbert, Pammel and Brownlie; Green River, Parry; 

 New Castle, Pammel; Yellowstone Park, Mammoth Hot Springs, A. 

 and E. Nelson). 



5. MILIUM. 



Milium. L.tSp. PL 61. 1753. Endlicher. Gen. PI. 82. Bentham and 

 Hooker. Gen. PI. 3: 1143. Hackel in Englera-d Prantl. Nat. Pflanz. 

 Fam. II, 2: 47. 



Miliarium Moench. Meth. 204. 1794. 



Spikelets 1 -flowered; rachilla articulated above the empty glumes, 

 not produced into a conspicuous callu?, nor extended above the flower- 

 ing glume. Glume 3, obtuse, awnless, the first two empty, subequal, 

 membranous, convex ; the third or flowering glume usually smooth and 

 shining, becoming indurated in fruit; palea nearly as long as its glume. 

 Stamens 3. Styles short, distinct; stigmas plumose. Grain ovoid or 

 oblong, free within the hardened glume and palea. Annual or peren- 

 nial grasses, with flat leaves and open panicles, differing from Oryzopsis 

 in the obtuse and awnless flowering glume. 



Bentham and Hooker give the number of species as 5 or 6; 

 Engler and Prantl, the same number. Found chiefly in the temperate 

 regions of Europe, Asia and North America. America one species; 

 Eurasia 5 to 6. 



MILIUM EFFUSUM. 



Milium effusum. L Sp. PI. 61. 1753. 

 10 



