762 GRAMINE#® POA 
mostly in pairs, smooth, each bearing a single spikelet: purplish, oval or linear 
3-5-flowered, 3-5 lines long: empty glumes obtuse or acute, often-erose-denticu- 
late, broadly scarious-margined; the first ovate-lanceolate, 1-nerved; the second 
oval-lanceolate, 3-nerved, 2 lines long: flowering glumes ovate-lanceolate, 3-5- 
nerved, not pubescent nor webbed at base: palets curved, linear, 244 lines long 
2-toothed, scabrous on the keels. On the plains of eastern Oregon and Wash. 
P. Fendleriana Vasey Grasses Pac. Slope ii, 74.. A densely tufted 
completely dicecious perennial: stems erect, scabrous to nearly smooth, 1-2 
feet high: sheaths rather loose, scabrous above, shorter than the internodes: 
ligules 1-2 lines long: leaves of sterile shoots very numerous, conduplicate, 
6-12 lines long, about 1 line wide: panicle 2-4 inches long, oblong, its min- 
utely scabrous branches in twos or threes, erect or somewhat spreading, 
1-2 inches long: spikelets compressed 3-4 lines long, 3-5-flowered: empty 
glumes broadly ovate, acute, carinate, minutely scabrous, 1-neryed, 1-2 
lines long the first slightly smaller: flowering glumes ovate-oblong, erose or 
emarginate at the obtuse apex, carinate, hispid on the keel above and more 
or less pubescent on the marginal nerves and midnerve below, 2-3 lines long: 
palets oblong, emarginate, pubescent on the keels. On dry hills, eastern 
Washington to California and the Rocky Mountains. 
P. lucida Vasey Cont. U. 8. Nat. Herb. i, 274. A slender tufted 
perennial: stems 18-24 inches high, smooth: sheaths equalling or shorter 
than the internodes, smooth: ligules 2 lines long: radical leaves 5-7 inches 
long 1-2 lines wide; those of the stem about 3, 2-3 inches long: panicle 4-6 
inches long, narrow, its branches mostly in twos or threes, the lower ones - 
1-2 inches long, erect or appressed: spikelets 3-4 lines long 3-4-flowered, 
shining, pale green: empty glumes oblong, abruptly acute, unequal, 144-2 
lines long, smooth, scarious at the apex and margins: flowering glumes 2 
lines long, linear-oblong, obtuse, sparsely and minutely scabrous, slightly pu- 
pescent near the base of the keel and Jateral nerves, scarious at the apex, 5-nery- 
ed: palet nearly equalling its glume. On high hills, eastern Wash. to Colo. 
P. Leckenbyi Scribn.1. c. 2. A pale green tufted perennial: stems 
2-214 feet high, smooth, often rooting at the lower nodes: sheaths smooth, 
all but the uppermost exceeding the internodes, the lower ones membran- 
ous, inflated: ligules about 3 lines long, acute, often fimbriately divided: 
radical leaves long and slender, glaucous, green, smooth beneath, rough 
above and on the margins, acute, flat: panicle 5-7 inches long; its branch- 
es erect, the longer ones 2-3 inches long: spikelets oblong-lanceolate, 6-7 
lines long, 5-6-flowered, compressed: empty glumes subequal 3-nerved, 
rough-hispid on the nerves rather narrowly lanceolate, acute or acuminate 
4lines long: flowering glumes ovate-oblong, 5-nerved, 3-5 lines long, 
scarious-margimed, often erose dentate above, hispidulous on the upper 
and pubescent on the lower half: palets shorter than the glumes, conspieu- 
ous, ciliate on the keels and minutely pubescent below, narrowed above 
to an erose cilate apex. Dry and very sandy soil eastern Washington. 
P. Nevadensis Vasey Scribn. Bull. Torr. Bot. Club x, 66. A loosely 
tufted perennial: stems rather stout, 20-40 inches high, scabrous below the 
panicle: ligules shorter than the internodes; ligules about 2 lines long, 
scabrous: leaves of sterile shoots very narrow, flat or conduplicate, 6-12 
inches long, scabrous, those of the stems usually 3, with sheaths 4-8 inch- — 
es long and blades 1-4 inches long: panicle narrow rather densely flower- 
ed, 4-6 inches long, its branches 2 or more at each ‘joint, erect: spikelets 
3-5 lines long, 3-8-flowered: empty glumes 14-2 lines long, nearly equal 
obtuse or subacute, 3-nerved, scabrous: flowering glumes 2 lines long, 
oblong, obtuse, scarious-margined above with a few very short hairs at 
base: palet ciliate on the keels. Moist soil, Oregon to Nevada Brit, Colum- 
