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cauline 1 or 2 inches; lower sheaths crowded and dilated; panicle 1 to 4 inches 
long, narrow, the lower branches short and erect, or fascicled and long; empty 
glumes, 4 lines long, acuminate; flowering glumes, about 3 lines long, with a short 
callus, 5-nerved, apex minutely 2-lobed, covered with copious silky white hairs, a 
line long, awn 2 lines long, very deciduous.—Sierra Valley (Lemmon) and Reno, Nevada, 
(S. M. Tracy.) 
5. O. melanocarpa Muhl. (Gray’s Manual, 6th ed., p.642.) Culms erect, 2 to 3 
feet high, leafy; leaves broad and flat, taper-pointed, 6 to 8 inches long; panicle 6 
to 9 inches long, lower branches in pairs, 2 inches long, erect, finally spreading, naked 
below the middle, few-flowered above; empty glumes 4 to 5 lines long, acute, about 
7-nerved; flowering glume slightly shorter, acuminate, coriaceous, sparsely pubes- 
cent; awn about an inch long; styles short and distinct.—New England to Missouri 
and Minnesota. 
6. O. micrantha Thurb. (Coult. Rocky Mt. FI., p.408) (Urachne micrantha Trin. 
& Rupr.) Culms tufted, slender, 2 feet high; leaves linear, sctaceous, involute-pointed, 
scabrous margined, the radical 10 to 12 inches long; panicle 4 to 6 inches long, the 
lower branches in pairs, 1 to2 inches long, rather distant, becoming spreading, flow- 
ering beyond the middle; spikelets 14 lines long; empty glumes thin, nerved, acute ; 
flowering glume one line long, smooth ; awn 3 lines long.—New Mexico, Colorado and 
northward. 
7. O. fimbriata Hemsl. (Stipa jimbriata H. B. K.) (Kunth Gram. p. 263.) 
Culms tufted, slender, 2 to 24 feet high; leaves filiform, setaceous, the radical a foot 
long or more, the cauline shorter; panicle 3 to 5 inches long, the lower branches in 
twos or threes, capillary, few-flowered toward the extremity; spikelets or empty 
glumes about 3 lines long, acute; flowering glume 2 lines long, very pubescent; awn 
6 to 8 lines long, smooth.—Western Texas, New Mexico, Arizona and Mexico. 
8. O. membranacea Vasey. Grasses of the Southwest, Pt. 2, p. 10. (Stipa membra- 
nacea Pursh.; Eriocoma cuspidata Nutt.; Stipa hymenoides R. & 8.; Milium cuspidatum 
Spreng; Urachne lanata Trin. ; Tendlerai rhynchelytroides Steud.) Culms tufted, 1 to 
2 feet high, mostly simple, sometimes geniculate, rather slender; leaves setaceously- 
convolute, rigid, scabrous, the lower often equaling the culm, scabrous, pungent; 
upper sheaths dilated; the blade overtopping the panicle or reduced to a filiform 
point, ligule a line long; panicle 4 to 6 inches long, widely spreading when mature, 
the capillary, flexuous branches mostly in pairs, the lower dichotomously branched, 
the branches 1-flowered; spikelets 3 or 4 lines long, on long filiform pedicels; empty 
glumes ventricose below, attenuate above, pubescent, 3- to 5-nerved below ; flower- 
ing glume broadly oval, about 2 lines long, densely long hairy, in age losing the 
hairs and becoming black, hard and shiny, the apex bifid; awn deciduous 2 lines 
long; palet narrow, entire,about equal to the glume.—British America to California 
and Mexico. 
Said to be a valuable and nutritious grass. Grows in gravelly or sandy ground. 
The difference between Stipa and Oryzopsis appears arbitrary, and botanists disa- 
gree as to the species included in each. 
MILIUM Linn. 
Spikelets 1-flowered, consisting of 2 equal, membranaceous, convex, awnless per- 
sistent glumes, with a coriaceous awnless flowering glume, and narrow palet, re- 
sembling a Panicum, but not jointed below the flowering glumes; panicle diffusely 
spreading. Grain inclosed in its glume and palet, all deciduous together, 
1. M. effusum Linn. (WILD MILLET-GRass,) (Gray’s Manual, 6th ed., p. 642. 
Perennial, culms smooth, 3 to 6 feet high; leaves broad, flat, thin, 6 to 10 inches long; 
panicle, 6 to 9 inches long, spreading, the branches 2 to5 together, naked below; 
empty glumes about 14 lines long, equal, 3-nerved; flowering glume about equal, 
oblong-ovoid, the edges overlapping the palet, about the same length.—Northern 
United States and Canada. 
