Agropyron divergens inermis Scribn. & Smith, var. nov. Empty g glumes uror 
narrowly lanceolate, acute, 4 to 6 lines long; flowering glumes 5 to 6 lines long, 
smooth, flattened on the back, acute or admi die, awnless or hie with a 
straight or spreading, but not divergent, awn shorter than the glume. Distin— 
guished from the species by its more slender aud more densely c:espitose culms, 
setaceous-convolute leaves, and muticous or short-awned flowering glumes; after 
flowering the spikelets very soon break up. 
British Columbia to Utah and Idaho. Specimens in the National Herbarium 
from * Columbia: 98a John Macoun, Yale, 1889, Columbia Valley, July 10, 
: 885. Washington: 1913, 1914, 1915, 1916 Piper, 1894; Sandberg and Leiberg, 237, 
E Es Idaho: 179 and 5 Sandberg, Heller e: TASA 1392; rs i 2822, 
: : 361 : 
epe is also a s Aita pes d 469 ] tera e pa in qt Caan 
Nebr., and distributed as Agropyron tenerum var., which differs only in having 
the os of the culms clothed Wes dead leaf sheaths. There are also two 
cimens from Washington, Dr. Vasey, Cascade Mountains, 1889, and 1166 
Suksdorf, 1889, which appare eri connect this variety and the species. The 
nk are very much compressed, and the culm leaves are from 8 to 12 inches 
lon 
a divergens tenuispicum Scribn. & Smith, var. nov. Culms 2 to 3 feet 
high; culm leaves 2 to 5 inches long, flat, becoming involute when dry, those of 
the innovations one-third as long as the culms and very narrow; spike slender, 
flexuous, 3 to 6 inches long, of from 8 to 14 erect 3- to 5-flowered anios ets: spike- 
lets 5 to 7 lines long; awns 5 to 9 lines long, slender, flexuous, or divergent. 
: W 
E] Herbarium from Oregon: 181 Howell, 1885. Idaho: a and 297 Sandberg, Heller, 
and MacDougal, Pigs Utah: 158 Ward. Montana: 347 Shear, wU 2074, 2147 
Rydberg, 1895. Wyoming: 623 Tweedy, 1885, Yellowstone Park. 
supted spikes. Culms glabrous or glancous, striate, terete; nodes glabrous; 
culm leaves 5 or 6; sheaths striate, es ous, shorter than the internodes; ligule 
embranons, very minute; leaf-blades smooth and glaucons on the back, 
scabrous on the margins, airs _Strigose se-pubescent above, rigid, erect or 
ascending, 1 line or less wide, 1 to 3 inches long, those of the innovations 3 to 6 
inches long. Spike very slender, 2 ‘i 4 inches long, rigid or somewhat flexuose, 
f 6 to 8 sub-distant, 3- to 5-flowered, erect spikelets, 4 to 5 lines long; empty 
glumes pe acute or acuminate, slightly nnequal, scarious along the 
: margins, 3 to 4 lines long; flowering glumes 4 lines long, lanceolate-acute and 
tipped with a ivit divergent awn 4 to 5 lines long; palea shorter than its glume, 
rounded or obtuse.—Agropyron divergens tenue — in Macoun’s Cat. Canad. 
Plants, vol. 4, p. 242, without — not 4. tenerum Vasey; Triticum egilo- 
caninum var. 3 Hook. Fl. vdes Am i: 55. 
This species is readily separated from 4. divergens, with which it has been 
ington: 2132 Henderson, 1892, dictribuléd i as A. tenerum. egon: | Henderson 
1884, Hood River Station. Montana: 461 S. Watson, 1880; 2161, 2299, 2301, 
Rydberg, 1895. Wyoming: 44 a agri Letterman, 1884; Burglehaus, 1893; yd 
mann, 1893. Colorado: J. Wolfe, 1 
br 0 Agropyron arizonicum $c ribn. & Smith, sp. nov. Glaucous, 14 to 2 feet high, with 
flat, soft leaves. Cul eylindrical, striate, 
clothed at the base with papery leaf sheaths. Culm leaves 6 to 7. Sheath 
longer than the internodes, ipei w t the t throat, 9 hairy; lignle sho: 
rox cape SE ER NM. e ua RET 
on 1 14 
poides Thurb., not Turez., in Gray, Proe. Phila. Acad., p. 79 (1863); Triticum 
25 
* 
A ae 
