25 
Sporobolus confusus (Fourn.) Vasey. 
Montana: Logan, dry prairies D sandy brooksides, July 27 (501, 2264); Melrose, 
d road, August 1 (22 
Sporobolus cryptandrus (Torr.) A. Gray. 
Nebraska: Valley, common in s ep soil, sa doubtful value, except perhaps for pas- 
urage when young, June 18 (253, 200 
Montana: Melrose, a small form, scarce in 5 sandy soil near the river, August 1 
(536). 
Colorado: Meadow Park, a robust form, rather local, on the hills, August 17 (2367); 
eorgetown, mountain sides, August 19 (640, 2402); Golden, abundant, August 
751). 
MAU ee brevifolius (Nutt.) Scribn. (Agrostis beten Nutt.; Vilfa cuspidata 
Tor 
ia North Platte, prairies, September 7 (771, 2519). 
Sporobolus depauperatus (Torr.) Scribn. ( Vilfa depauperata Torr.). 
1 Georgetown, meadows, August 19 (627). 
(2323 
Montane Manhattan, in meadows, a tall a nd wee form agreeing in characters 
ith Vilfa richardsoni Trin., July 17, (410, 2117); Dillon, in meadows, July 3 
(333, 2081); Melrose, in meadows: July 6, (342, de Madison River, in meadows, 
July 28 (524, 2276); Logan, dry bench lands, July 28 (516), a form which nearly 
corresponds to the type as figured in Hook. Flor. Bor. Amer.; Butte, July 31 
(2291). 
Sporobolus gracillimus (Thurb.) Vasey (Vilfa gracillima Thurb.). 
Colorado: Georgetown, wet sandy places, August 19 (661, 2411). 
Cinna latifolia ( Trev.) Griseb. (C. pendula Trin.). 
Montana: Helena, among bushes near the Warm eei July 13 (2139 
Colo ado: Idaho Springs, moist shady banks of canyon and along leia; August 27 
(713, 2473), and a lax, small-panicled form, A 28 (724, 2474). 
Agrostis alba L. 
Nebraska: m June 18 (251, 2001 
Colorado: Idaho Springs, common, — 27 (135); Golden, common, near Clear 
Greek; aa 29 (748, 2501). 
Utah: Logan, in woods, Logan Canyon, August 9 (2349); Echo, a small form with 
dark-colored panicles, common on the sand bars in the river, August 13 (2359). 
Montana: Helena, an excellent hay grass for irrigated land, more leafy and yields 
more heavily than the eastern 4. alba, July 12 (384, 2137, 2138); Manhattan, 
sandy river banks, scarce, July 18 (435); Logan, common, woods and meadows, 
July 27 (504, 2269, 2349); Melrose, abundant in irrrigated meadows, August 1 
(543, 2294) ; Madison River, July 28 (2281, 2282). 
Agrostis alba L. var. 
A stoloniferous form with short, rather dense panicles, and short leaves. 
Colorado: Georgetown, growing on tussocks in a marsh, August 19 (653, 2409). 
Agrostis asperifolia Trin. 
Maa: Heiena, frequent in wet places, an excellent grass, July 13 (385); Bozeman 
2220), robust sm along irrigation ditch; (2261) rare in canyon below Mystic 
Lake; (456) narrow-leafed with contracta dense panicle, frequent in wet 
meadows, à me hay grass; (2257) a small short-leafed form, culms naked 
below, and a short narrow dense panicle tinged with red, in the canyon below 
Mystie Lake; and 500, like 445, July 25; Manhattan, scaree in meadows along 
