189 
Sporobolus cryptandrus robustus Vasey, Contr. Nat. Herb. i, 56 (1890). 
On the sand hills: Mullen, July 17 and 24; Cody’s Lakes, August 10 (No. 1549). 
Sporobolus filiformis (Thurb.) nom. nov.; Vilfa depauperata jiliformis Thurb. ; 
Wats. Bot. King Surv. v, 376 (1872), 
The latter is an older name than Jilfa gracillima Thurb, Bot, Cal, ii, 268 (1880), 
which was changed to Sporobolus gracillimus by Scribner. This western species, as 
far as I know, has not before been collected east of Utah and Montana. It was found 
abundantly around a spring, 2 miles west of Thedford, September 9 (No. 1741). 
These specimens are taller than those from the mountains. Stems often 2 dm, or 
more long, but slender, more or less decumbent. A few specimens were found one- 
half mile farther down the river, September 7 (No. 1759). These have larger flowers, 
nearly as large as S. cuspidatus, from which they are easily distinguished by the short 
outer glumes and annual roots. Professor Scribner thinks this is scarcely distinct 
from S. depauperatus. 
Sporobolus asperifolius (Nees & Meyen) Thurb. Bot. Cal. ii, 269 (1880); Vilfa 
asperifolia Nees & Meyen; Trin. Mem. Acad, St, Petersb. ser. 6, iv, 95 (1840). 
In wet meadows: Cody’s Lakes, August 17; Mullen, August 17; Thedford, Septem- 
ber 8 (No. 1657). 
Agrostis alba L. Sp. Pl. i, 63 (1753). 
A light-colored, slender form growing in shade: South Dismal River, July 18 
(No. 1546). 
Agrostis exarata Trin. Uniil. 207 (1824). 
An approximately typical form was found near Plummer Ford, July 3 (No, 1842); 
aslender form with narrow spike-like panicle at Mullen, July 17 (No, 1800); a robust 
one with large panicle and broad (up to 6 or 7mm. wide) leaves, Plummer Ford, July 
— 4 (No. 1492). 
Agrostis hiemalis (Walt.) B.S. P. Cat. Pl. N. Y. 68 (1888); Cornucupiw hyemalis 
Walt. Fl. Car. 74 (1784). 
Dismal River, June 27; Plummer Ford, July 4; Mullen, July 19 (No. 1488). 
A variety of this species differing in the more robust and strict stem, the larger 
panicle, the broader, flat leaves (3 to 4mm, wide), and the larger flowers with outer 
glumes that are nearly equal, It was mistaken for A, altissima lara Tuckerm., but Pro- 
fessor Scribner has corrected the error and regards it as a luxuriant form or variety 
of A, scabra, which is held to be the same as Walter's Cornucupiw hyemalis. Plummer 
Ford, July 4 (No. 1489). 
Calamovilfa longifolia (Hook.) Hack. True Grasses, 113 (1890), Calamagrostis longt- 
folia Hook. FI. Bor, Amer. ii, 241 (1840), 
Common on the sand hills, throughout: Mullen, July 22; northeast of Whitman, 
July 31 (No. 1804). 
Calamagrostis canadensis (Mx.) Beauv. Agrost. 15 (1812); Arundo canadensis Mx. 
FI. i, 73 (1803). 
A slender form with loose panicle and broad, less acuminate, outer glumes: Whit- 
man, July 29 (No. 1620). 
Calamagrostis neglecta (Ehrh.) Giertn. Fl Wett. i, 94 (1799); Arundo neglecta 
Ehrh. Beitr. vi, 187 (1791). 
Very variable. In some plants the panicle is nearly spike-like: Dismal River, 
June 27, Norway, June 22 (No. 1426). The specimens from Norway are more leafy, 
with narrower leaves. Some have a more open panicle, as those from Plummer 
Ford, July 4 (No.1494). ina few specimens from Mullen, July 17, the panicle is 
large and dense and the leaves broad. 
Schedonnardus paniculatus (Nutt.) Trelease; Branner & Coville, Rep. Geol. 
Surv. Ark. 1888, pt. 4, 236 (1891); Lepturus paniculatus Nutt, Gen, i, 81 (1818). 
Rare: on sandy soil, Thedford, August 19 (No. 1710). 
