33 



Stipa minor (Vasey) Scribu. (Pukplk-top Needle-grass). — A bunch grass with 

 nnnierons slender root leaves, slender, somewhat wiry stems terminated by long 

 heads with divaricate and Aariously twisted or bent awns of moderate length. 

 Theroot system, with the dead leaves and stems of the previous year, forms a firm, 

 harsh mat, from which the new stems and leaves arise, 15 to 2.5 inches high. It 

 seems to belong to the mountain slopes in the region of permanent winter snows, 

 especially among the fallen timber on partially open hillsides. It is not 

 known whether the awns are 

 such as to lessen its forage value. 

 "G." Summer ranch, July 23 

 (3828); Battle Lake, August 16 

 (4026). 



Stipa tweedyi Scribn. (Tweedy's 

 Stipa). — A bunch grass of 

 spreading habit with long, gen- 

 iculate, bent awns ; stems 20 to 30 

 inches long. In general appear- 

 ance it much resembles S. comata, 

 and its forage value may well 

 be compared with that. Sheep 

 Mountain, July 3 (3297). 



Stipa viridula Trin. (Feather 

 Bunch-grass). — A tall, coarse 

 bunch-grass, with a long, close 

 panicle, awns bent, of moderate 

 length, seeds falling early. It 

 occurs in the eastern part of the 

 State on the dry, open plains, 

 but never iu any great abun- 

 dance. Pine Bluffs, July 6 (3613). 



Oryzopsis micrantha Thurb. 

 (Small - flowered Mor xtain 

 Rice). — A rather handsome, 

 slender, spreading grass with 

 long, slender root leaves, pan- 

 icles loose and spreading, the 

 spikelets on slender, divaricate 

 pedicels, mature seeds large. 

 This was secured but once, 

 among the broken rocks in the 

 bottom of a dry canyon. It 

 must be of excellent quality, 

 and if it Avould thrive under 



cultivation it would form a valuable addition to our forage plants. 

 July 6 (3615). 



Eriocoma cuspidata Xutt. (Indian Millet).— A valuable grass of very wide dis- 

 tribution in the State. Pine Bluffs, July 5 (3606). 



Muhlenbergia comata Bentli. (Hairy Muiilenuergia). — A smooth perennial with 

 rather scanty leaves, 1 to 2 feet high, heads spike-like, soft-hairy, the awns short 

 and fine. Not plentiful; usually on river bottoms and most frequently among 

 the stones on the low banks. Evanston, July 28 (3857); Grand Encampment 

 Creek, August 13 (3994). 



Muhlenbergia gracilis breviaristata Vasey. — Growing in tufted, mat-like clumps; 

 leaves mostly radical, short; stems slender, 6 to 12 inches high; heads large for 

 the size of the grass, awns very short. It occurs in the hills, mostly on the naked 

 3018— No. 13 3 



Fig. 4. — Seneca-grass {Savastana odorata) : a, spikelet; 

 b, rtorets; c, palet; d, pistil. 



Pine Bluffs, 



