23 
Stipa scribneri Vasey. 
Colorado: Georgetown, occasional on 1 August 1 (641); Golden, here and 
there in Clear Creek Canyon, August 29 (2507). 
Stipa spartea Trin. 
Colorado: Georgetown, frequent on mountain sides, August 19 (636). 
, Stipa viridula Trin. 
Montana: Dillon, on the prairies, but rather local, may be a good hay grass when cut 
early, July 3 (2087); Gallatin, meadows, where common it makes fair hay, July 
16-29 (528, 2180, 2285) ; Manhattan, frequent in moist, shady places, July 17 (413). 
Stipa lettermani Vasey. 
Montana: Lima, canyon and mountain sides, August 
> 5 (595, 2302). 
Idaho: Reeves Canyon, not common in the meadows, 
August 7 (2343). 
“Stipa robusta (Vasey) Scribn. (S. viridula robusta 
Vasey). 
Colorado: Idaho Springs, common, August 27, 28 
(725, 2493, 2489), a lax-panicled form; Georgo- 
town, mountain sides, frequent, August 1 (639). 
3 Beaver Canyon, frequent, dry mountain sides, 
27 (301) and August 7 (2345). 
Eriocoma cuspidata Nutt. 
Wyoming: Wamsutter, frequent along the rail- 
1 roads, June 24 (2814); Green River, only a few 
specimens in the valley, June 25 (2035). 
Colorado: Georgetown, frequent on mountain sides, 
August 19 (644). 
Montana: Melrose, stony hillsides, affording some 
pasturage, July 6 (349); Manhattan, abundant 
in e 8 rp July 17 (432, 2194). 
It is said by some to make good hay, but it is 
apparently a deti pest, asit has taken possess- 
his M 
species has taken more than half the ground. Fig. 18.—Needle and Thread (Stipa 
comata.) 
Oryzopsis micrantha Thurb. 
Colorado: Meadow Park, scarce, in the foothills on rocks, August 15, 29 (599, 744), 
Muhlenbergia racemosa (Mx.) B. 8. P. (M. glomerata Trin.). 
Nebraska: Central City, scarce along the river bank, June 29 (527 
Colorado: Meadow Park, frequent in rocky places in the foothills, August 15 (600); 
' Golden, in Clear Creek Canyon, August 29, 30 (754, 2506); Boulder, September 3 
Montana: Gallatin, along the railroad, July 29 (527, 2286). 
Muhlenbergia gracilis (HBK.) Trin. 
Colorado: Meadow Park, common in dry places in the foothills, perhaps a valuable 
pasture grass, August 15 (598, 2361); Idaho Springs, hillsides, a large form with 
vog titii broad leaves and many-flowered, rather dense panicles, August 
29 (24 Te foothills, September 3 (759, 2510); Georgetown, common, 
August 19 (632, 643, 2399, 2403); Georgetown, frequent in a meadow, August 19 
(632). 
