40 



hard, somewhat compressed, and very leafy. The panicle is nar- 

 row, 2 to 4 inches long, composed of numerous close clusters of flow- 

 ers, becoming looser below, forming an interrupted glomerate spike. 

 The spikelets are closely sessile in the clusters. The outer glumes 

 are linear-lanceolate, gradually tapering into an awn or bristle of 

 equal length. The flowering glume is one-third to one-half shorter 

 than the outer glumes and very acute. The root-stock is hard and 

 knotty and furnished with numerous short, firm shoots or stolons. 

 In the Eastern States it is utilized as one of the native products of 

 wet meadows in the making of what is called wild hay. Specimens 

 have been sent from Colorado and Kansas and recommended as an 

 excellent grass for hay. 



13. M. glomerata, var. ramosa, Vasey. A much branched spreading 



form. Illinois to Colorado and Montana. 



14. M. gracilis, Trin. Rocky Mountains and plains. 

 M. gracilis, var. major, Vasey. New Mexico. 



15. M. graeillima, Torr. Plains, Colorado, and New Mexico. 



16. M. Mexicana, Trin. New England to Mexico. 



A perennial grass of decumbent habit, 2 to 3 feet high, much 

 branched, from scaly creeping root-stocks. It is frequently found 

 in moist woods and low meadows, or prairies. It probably would 

 not endure upland culture, but in its native situations it fills an im- 

 portant place among native grasses. 



M. Mexicana, var. filiformis. With the preceding. 



17. M. monticola, Buckley. West Texas to Arizona. 



18. M. pauciflora, JBackl. West Texas to Arizona. 



19. M. Parishii, Vasey. California. 



20. M. pungens, Thurb. Colorado and New Mexico. 



21. M. Pringlei, Scrib. New Mexico and Arizona. 



22. M. Reverchonii, Vasey <& Scribner. Texas. 



23. M. Schaffneri, Fourn. Arizona. 



24. M. setifolia, Vasey. West Texas. 



25. M. sobolifera, Trin. New England to Texas. 



26. M. subalpina, Vasey. (M. gracilis, var. breviaristata, Vasey.) 



Colorado and Wyoming. 



27. M. sylvatica, T & G. New England to the Rocky Mountains. 

 M. sylvatica, var. setiglnmis, *S'. W. Nevada. 



This species has much the appearance and habit of M. Mexicana. 

 The panicle is looser, the spikelets not so densely clustered, and the 



