224 GRAMINEAE. 
14. Bromus unioloides (Willd.) H.B.K. Schrader’s Brome-grass. 
Southern Chess. (Fig. 519.) 
Festuca unioloides Willd. Hort. Berol. 1:3. pi. 3- 
1806. 
Bromus unioloides H.B.K. Nov. Gen. 1: 151. 
1815. 
Bromus Schraderi Kunth, Enum. 1: 416. 1833. 
Culms 6/—3° tall, erect, simple, smooth and 
glabrous. Sheaths usually shorter than the in- 
ternodes, the lower often overlapping, smooth 
or rough, and glabrous or frequently pubes- 
cent; ligule 1’’-2’’ long; leaves 3’—13/ long, 1//— 
4’’ wide, usually rough, at least above; panicle 
2/-10’ in length, the branches erect or ascend- 
ing, or the lower branches of the larger panicles 
widely spreading; spikelets much compressed, 
6-10-flowered; empty scales acute, the first 3-5- 
nerved, the second longer, 5~9-nerved; flower- 
ing scales 6’’-8’’ long, very acute, minutely 
scabrous, bearing an awn less than 1// long or 
awnless. 
Kansas (?) to the Indian Territory, Texas and 
Mexico. Widely distributed in South America. 
May-July. 
85. NARDUS L. Sp. Pl. 53.1753. 
A low perennial tufted grass, with setaceous rigid leaves and a terminal one-sided slender 
spike. Spikelets 1-flowered, narrow, sessile and single in each notch of the rachis. Scales 
2, the lower empty, adnate to the rachis, or almost wanting, the upper flower-bearing, nar- 
row, with involute and hyaline margins; palet narrow, 2-nerved. Stamens 3. Style elon- 
gated, undivided. Stigma elongated, short-papillose. Grain linear, glabrous, enclosed in 
the scale, usually free. [Name Greek, of uncertain application. ] 
A monotypic genus of the Old World. 
1. Nardus stricta L. Wirebent. Mat-grass. Nard. (Fig. 520.) 
Nardus stricta I,. Sp. Pl. 53. 1753. ) 
/ y 
Culms 5/-15’ tall, erect, simple, rigid, \ / 
roughish. Sheaths usually at the base of the } 
culm; ligule %’’ long, rounded; leaves seta- y 
ceous, stiff, rough, the 1 or 2 culm leaves | 
about 1’ long, erect, the basal ones numer- \ ] f 
ous, 2/-5’ long; spike 1/-3/ in length, strict; 
spikelets 1-flowered, 3’’-4’’ long, arranged 
alternately in 2 rows on one side of the erect \ 
slender rachis, often purplish; lower scale NY 
empty, very short, adnate to the rachis, > 
sometimes almost wanting; flowering scale 
\ 
3/’-4’’ long, scabrous, long-acuminate or 7 \ Ny L 
short-awned. | \" / 
Introduced into Newfoundland and at Am- Up 
\ 
herst, Mass. Adventive from Europe. July- 
Aug. -_ 
a WY Kt} 
ERUT AY 
1h AN 
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