38 



hard, but not hairy, and smaller palet. In Montana it is one of the 

 most esteemed hunch grasses, and thrives on soil too sandy for other 

 valuable species. 



4. O. exigua, Thurb. (O. Oregona, Trin.?) Oregon to Montana. 



5. O. raelanocarpa, Muhl. New England, Pennsylvania to Wis- 



consin. 



6. O. micrantha, Thurb. Colorado to Arizona. 



7. O. "VTebberi. (Eriocoma, Thurb.) California. 



Milium, Linn. 



Spikelets panicled ; outer glumes membranaceous, equal and con- 

 vex, the flowering glume and its palet coriaceous, much as in Pani- 

 cum, but the articulation with the rhachis is above the outer glumes. 

 All the glumes are unawned and there is no sterile pedicel. 

 1. M. effusum, Linn. New England, New York, and Northwest. 



A tall perennial grass, 4 or 5 feet high, growing in damp woods 

 in the northern portions of the United States and in Canada. It is 

 also found in Northern Europe and in Russian Asia. 



Hon. J. S. Gould, in the Report of the New York State Agricul- 

 tural Society, says respecting this grass : 



Mountain meadows and borders of streams and cold woods. It thrives when 

 transplanted to open and exposed situations. It is one of the most beautiful of the 

 grasses ; the panicle is often a foot long, and the branches are so exceedingly deli- 

 cate that the small glossy spikelets seem to be suspended in the air. Birds are very 

 fond of the seed. Mr. Colman says that he has raised 3 tons to the acre of as good 

 nutritious hay as could be grown from it, when sown in May. The plants multiply 

 by the roots as well as by the seed, sending out horizontal shoots of considerable 

 length, which root at the joint as they extend. 



Muhjlenbekgia, Schreb. 



Spikelets one-flowered, small, paniculate, articulated above the 

 outer glumes ; flowering glume witli a very short, usually hairy 

 callus. Outer glumes variable in size, from small or minute to 

 nearly as large as the flowering glume, sometimes bristle-pointed, 

 keeled, persistent, thin; flowering glume three to five nerved, rigid 

 or thinnish, mucronate or awned, sometimes with a long capillary 

 awn from the apex between the short teeth, frequently pubescent 

 below ; palet about as long as the flowering glume and of similar 

 texture. 

 1. M. Arizonica, Scribn. Arizona. 



