39 



2. M. arenicola, Buckl. Texas to Arizona. 



3. M. Berlandieri, Trin. Texas to Arizona. 



4. M. Calamagrostidea, Trin. Texas to Arizona. 



5. M. California, Yasey. South Carolina. 



M. Californica, var. Lemmoni, V<tsey. Arizona. 



6. M. capillaris, Kth. New England to Florida and Texas. 



M. capillaris, var. filipes. Chap. (M. filipes, Curtis.) South 

 Carolina to Florida. 



M. capillaris, var. trichopodes. (M. trichopodes, Chap.) Vir- 

 ginia to Louisiana. 



7. M. comata, Benth. (Vaseya, Thurber.) Wooly seeded Muhlen- 



bergia. Rocky Mountain region, Colorado to California. 

 This species grows throughout the Rocky Mountain region in 

 Colorado, Utah, Wyoming, Idaho, Nevada, and California, usually 

 on the sandy or alluvial banks of streams. It grows in tufts from 

 firm, creeping root-stocks. There is reason to think it may be a 

 valuable grass for arid regions. The culms are erect, simple, 2 to 3 

 feet high, leafy below, the leaves 3 to 6 inches long and roughish, 

 the upper one at first inclosing the base of the pauicle, the joint 

 slightly pubescent. The panicle is 2 to & inches long, narrow, and 

 close, sometimes interrupted below, generally of a purplish lead 

 color and of soft texture. 



8. M. debilis, Trin. Texas to Arizona. 



9. M. depauperata, Scrib. Arizona. 



10. M. dumosa, Scrib. Arizona. 



11. M. diffusa, Schreb. Nimble Will. New England to Mexico. 



Professor Killebrew, of Tennessee, says : 



It is hardly more than necessary to mention this grass, which forms in many 

 sections the bulk of the pastures of the woods. It does not grow in fields, but in 

 woods, where, after rains have set in, it carpets the earth with living green. Various 

 opinions are entertained as to its nutritive qualities. Some farmers assert that their 

 stock are fond of it, and that on sufficient range cattle, horses, and sheep will go 

 into the winter sleek and fat from this vigorous grass. Others regard it as well nigh 

 worthless. 



12. M. glomerata, Trin. Spiked Muhlenbergia. 



This grass grows in wet, swampy grounds, chiefly in the northern 

 and western portions of the United States. It is found in Colorado, 

 Utah, Nevada, New Mexico, and Texas. It grows to the height of 

 2' or 3 feet, stiffly erect, and generally uhbranched. The culm is 



