160 GRAMINEAE. 
2. Agrostis exarata Trin. Rough-leaved Bent-grass. 
Agrostis exarata Trin. Unifl. 207, 1824. 
Agrostis asperifolia Trin. Mem, Acad. St. Petersb. 
(VI.) 6: Part 2, 317. 1845. 
Culms 1°-3° tall, erect, or sometimes decumbent 
at the base, simple, smooth and glabrous. Sheaths 
usually shorter than the internodes, smooth or 
roughish; ligule 1/’-34’’ long, more or less decur- 
rent; leaves 1/-8’ long, 1/’-4’’ wide, generally erect, 
flat or involute, scabrous; panicle contracted, 2%4/— 
10’ in length, often interrupted or glomerate, the 
branches 114/—3/ in length, erect, spikelet-bearing 
to the base; spikelets crowded, 1//-2’’ long, the 
outer scales subequal, scabrous, especially on the 
keel; third scale from less than one-half to three- 
fourths the length of the second, obtuse or sub- 
acute; palet minute. 
Manitoba to Alaska, south to Wisconsin, Nebraska, 
(Fig. 363.) 
Texas and California. 
Agrostis canina I,. Sp. Pl. 62. 
3. Agrostis Elliottiana Schultes. Elliott’s Bent-grass. (Fig. 364.) 
Agrostis arachnoides Ell. Bot. S. C. & Ga. 1: 134. 
1817. Not Poir. 1810, 
Agrostis Elliottiana Schultes, Mant. 2: 202. 1824. 
Culms 5/14’ tall, erect, slender, simple, smooth 
and glabrous. Sheaths shorter than the internodes, 
smooth or slightly scabrous, strongly striate; 
ligule 1/’ long; leaves rough, 14’-2’ long, 1/7 
wide or less; panicle 2/-5’ in length, usually 
narrow, sometimes open, the branches slender, 
naked below, erect or ascending, the lower 1/-1 14” 
long; spikelets 3;’’. long; outer scales subequal, 
scabrous on the keel, acute; third scale about three- 
quarters as long as the first, erose-truncate, acute or 
2-toothed, bearing a very finely filiform flexuous 
barbellate awn, 2-4 times its length, inserted just 
below the apex; palet short. 
In dry soil, South Carolina to Kentucky and Mis- 
souri, south to Florida and Texas. May-July. 
4. Agrostis canina lL. Brown Bent-grass. (Fig. 365.) 
Culms 1°—2° tall, erect, slender, simple, smooth and 
glabrous. Sheaths shorter than the internodes; ligule 
44//-1%”’ long; leaves 1/-3/ in length, 1’’ wide or less, 
scabrous; panicle 2/-7’ in length, contracted in fruit, 
the branches slender, naked below, ascending or 
spreading in flower, the lower 1/-2!4’ long; spikelets 
1/’ long, on appressed pedicels, the outer scales sub- 
equal, acute, strongly scabrous on the keel; third scale 
about two-thirds the length of the first, obtuse, smooth 
and glabrous, bearing a straight or somewhat bent 
dorsal awn 1//—2’’ long, inserted just above the middle; 
palet minute or none. 
In meadows, Newfoundland to Ataska, south to Penn- 
sylvania and Tennessee. Native northward; naturalized 
om Europe southward, <A variable species. July—Sept. 
