467 
Culms in close tufts, leaves flat, linear, roughish, panicle pyramidal or oblong^ 
pwer palea crowded-four-tootbed at the truncate apex, short awned above the 
base; awn straight; grain ovate, free, not grooved; glumes not exceeding the 
flowers. Perennial; flowers in June. Culms 2 to 4 feet high. Wet places. 
Wisconsin, Ohio, Michigan, and about Lake Superior. Also a native of Europe, 
The foliage is coarse, containing but little nutriment, and is only eaten by 
attle from necessity. It does not grow here, as in some other localities in 
sufficient abundance to be troublesome as a weed. 
Plate YIII.—Fig. 1. a plant, natural size. 
2. a spikelet of three flowers. 
3. same, opened. 
4. lower palea. 
5. awn. 
ij. nui OiiJ iUjo j* /»* x’j • j.i. ! u jj 
6. a flower. 
7. scales, germ and stigmas. 
.frig hs/tui amlnO 
‘.'/•iilj'odj lit b'b'IAOd 
, b 01 SKj (\ft iqa 
roi rLum edi 
mnaio’i .Lvsodilo 
106. 
Common hair-grass. 
Air a Flexuosa. Zinnceus. 
. • 1/ Ill Vi.if 30 J i Kf . ' • 
i 2 
tajlT 
Culms slender, nearly naked, from'the small tufts of involute-bristle-form, 
often curved leaves; branches of the small spreading panicle capillary, mostly 
in pairs; lower palea slightly two-toothed; awn from near the base, bent in the 
middle longer than the glumes. Perennial; flowers in June. Culms 1 to 2 
feet high. About Lake Superior, (Agassiz). This species possesses no value 
for pasture or hay. 
GENUS 40. TRISETUM. 
JPersoon. 
63 Kit ateforfiqS 
[Latin, tris, three, and seta, a bristle.] 
Spikelets two to several-flowered, mostly in a contracted panicle; lower palea 
eompressed-keeled, two cusps at the top, and an (often twisted) awn on the 
back; upper palea two-keeled; caryopsis smooth, without a longitudinal furrow, 
r 
107. Trisetum Molle. Kunth. 
’16 df v I bylrevm qliaio 
Syn. —T. subspicatum, Beck. Avena mollis, Michx. 
Minutely soft-downy; panicle dense, much contracted, oblong or linear; 
glumes nearly equal, about the length of the 2 or 3 smooth flowers; awn di¬ 
verging, much exserted, not twisted; leaves flat, short. Perennial; flowers in 
July. Culms about one foot high. Lake Superior.—(Mr. W. D. Whitney.) 
