738 GRAMINEA STIPA 
ORYZOPSIS 
In the mountains, Washington to California. 
S. viridula Trin. Bull. Sc. Acad. St. Petersb. i, 67. Stems 144-5 feet 
high. with numerous withered sheaths at base: sheaths half as long as the 
internodes or less: ligules very short: leaves all involute-setaceous at the 
apex, smooth or slightly scabrous, pale green, the lower 4% as long as the 
stem: panicle 6-18 inches long, narrow, loose, the short erect branches in 
twos or threes: spikelets 4-5 lines long, on short pedicels: empty glumes 
nearly equal, ovate, bristle- pointed, the lower 5-nerved, the upper 3-nerved; 
flowering glume about 14 shorter than the empty ones, with short scattered 
hairs which form an irregular crown, and with 2 very minute hyaline 
teeth, the callus very short: awn 1-14 inches long, slender, flexuous, 
usually twice’bent, pubescent below, scabrous above at length deciduous: 
palet more than half as long as the glume. California to Brit. Columbia 
and Nebraska. 
S. minor Scribn. 1. c. 11, 46. Densely cespitose: stems 16-24 inches 
high, smooth or very minutely pubescent below the nodes: sheaths 
smooth: ligules very short, slightly auricled, broader than the base of the 
leaves: leaves 5-15 inches long, 1-2 lines wide, with very long attenuate- 
in volute tips: énipty glumes lanceolate, sharply acuminate-pointed, 3-nery- 
ed near the base, the lower slightly broader and longer than the upper 
and less distinctly nerved: flowering glume, including the short callus, 2 
lines long, thinly pilose all over and with a crown of hairs at the distinctly 
2-toothed apex: awn once or twice bent, about 10 lines long, very minute- 
ly scabrous: palet about 144 as long asthe glume. Moist mountain sides, 
Idaho to Montana and Colorado. 
S. Lemmoni Scribn, U.S. Dept. Agr. Div. Agrost. Circ. 30,3. Stems 
slender, rigid, erect, 1-2 feet high, glabrous: sheaths glabrous, shorter 
than the internodes: ligules less than a line long, rounded, entire, leaves 
2-5 inches long, 1-2 lines wide, glabrous beneath, pubescent and strongly 
striate above, closely involute when dry: panicle 5-6 inches long, strict, 
its branches erect, 1-144 inches long, few-flowered: empty glumes nearly 
equal, about 6 lines long, broadly lanceolate, long acuminate-pointed, 3-5- 
neryed, scarious except the nerves: flowering glume oblong, about 6 lines 
long, obtuse, 2-toothed at the apex, thinly pilose all over with appressed 
hairs: palet hairy, nearly as longasthe glume. Dry rocky slopes, eastern 
Washington tu California. 
22 ORYZOPSIS Michx. Fl. i, 51. 
Usually tufted grasses with flat or convolute leaves and panicled 
inflorescence. Spikelets broad, one flowered. Glumes 3, the 2 
lower ones about eyual, obtuse or acuminate, the third shorter or 
a little longer, broad, bearing a terminal awn which is early decid- 
uous. Callus short and obtuse or amerescar. Stamens 3 : styles 
distinct. Stigmas plumose. Grain oblong, free, tightly enclosed 
in the glume. 
0. cuspidata Vasey Special Rep. U. S. Dept. Agr. 63, 23. Closely 
tufted perennial: stems slender thickened at base, solid smooth 12-18 inch- 
es long: sheaths shorter than the internodes, smooth and close, the upper 
one longer and loose: ligules ovate, a line long, acute or lacerate: radical 
leaves numerous, the scarious sheaths clustered thick about the base of the 
stems, 6-10 ine¢hes long, involute: panicle very loose, 4-6 inches long, 
inclosed at the base, branches mostly in pairs, distant, horizontal, divided 
in pairs beyond the middle, bearing solitary spikelets on long flexuous pedi- 
cels: spikelets 3 lines long, first and second glumes equal, inflated and 
widened below, narrowed above to a long sharp point, scarious except the 
5 nerves, minutely pubescent: flowering glume ovoid, or oblong, profusely 
A, 
