106 MISC. PUBLICATION 4 2 3, U. S. DEPT. OF AGRICULTURE 



pilose on the lower part of the margins; palea broad, hyaline, the 

 nerves near the margins. 



1. Schismus barbatus (L.) ThelL, Herbier Boissier Bui., ser. 2, 7: 391 

 1907. 



Festuca barbata L., Amoen. Acad. 3: 400. 1756. 



Pinal and Maricopa Counties, 1,100 to 2,000 feet, growing in great 

 abundance on the open desert, where it is an important spring range, 

 grass. Arizona and California; introduced from the Old World. 



25. KOELERIA. Junegrass 



Tufted perennial with narrow blades and shining spikelike panicles; 

 spikelets 2- to 4-flowered, the rachilla prolonged beyond the florets as a 

 slender bristle; glumes dissimilar, the first narrow, 1 -nerved, the second 

 broadened above the middle, 3- to 5-nerved; lemmas pale, shining, 

 acute, awnless. 



1. Koeleria cristata (L.) Pers., Syn. PL 1: 97. 1805. 



Aira cristata L., Sp. PL 63. 1753. 



Apache County to Coconino and Yavapai Counties, south to Cochise 

 and Pima Counties, up to 8,500 feet, dry plains, rocky ground, and 

 pine woods, May to October. Ontario to British Columbia, south to 

 Delaware, Missouri, Louisiana, Arizona, California, and Mexico. 



The plant affords summer forage in the mountains. 



26. SPHENOPHOLIS. Wedgescale 



Slender perennials with flat leaf blades and narrow, often dense, 

 shining panicles; spikelets 2- or 3-flowered; pedicel disarticulating 

 below the glumes; rachilla produced beyond the upper floret; first 

 glume narrow, acute, the second broadly obovate; lemmas firm, 

 awnless, the first usually a little longer than the second glume. 



Key to the species 



1. Panicle dense, often spikelike, erect; second glume very broad, obtuse. 



1. S. OBTUSATA. 

 1. Panicle rather loose, nodding, never spikelike; second glume subacute. 



2. S. INTERMEDIA. 



1. Sphenopholis obtusata (Michx.) Scribn., Rhodora 8: 144. 1906. 



Aira obtusata Michx., Fl. Bor. Amer. 1: 62. 1803. 

 Eatonia obtusata A. Gray, Man. ed. 2, 558. 1856. 



Apache, Navajo, Coconino, Yavapai, Cochise, and Pima Counties, 

 moist ground and open woods at medium altitudes, May to July. 

 Maine to British Columbia, south to Florida, Arizona, California, and 

 Mexico. 



2. Sphenopholis intermedia (Rydb.) Rydb., Torrey Bot. Club Bui. 36: 



533. 1909. 



Eatonia intermedia Rydb., ibid. 32: 602. 1905. 



Fort Apache, Navajo County {Palmer 577), Fort Huachuca, Cochise 

 County {Palmer 467) , moist ground and shady places. Newfoundland 

 to British Columbia, south to Florida and Arizona. 



