GRASS FAMILY. 161 
5. Agrostis rubra I, Red Bent-grass. (Fig. 366.) 
Agrostis rubra Y,. Sp. Pl. 62. 1753. 
Agrostis rupestris Chapm. Fl. S. States, 551. 1860. Not i A 
All, 1785. ( 
Agrostis rubra var. Americana Scribn.; Macoun, Cat. \ ( ( 
Can. Pl. 5: 391. 1890. \ \ 
( 
Y 
Smooth or very nearly so, glabrous, culms 6/—2° tall, \\¥ a Ly J 
erect or sometimes decumbent at the base, simple. {yf WV = 
Sheaths usually shorter than the internodes; ligule 1/’ a \ : 
long; leaves 2’-4’ long, %’’-114’’ wide; panicle 2%4/— \\ ! , 
5’ in length, open, the branches generally widely WH — 
spreading and more or less flexuous, rarely erect, the Xs 
lower 1/-21%’ long; spikelets 11¢’/-114’’ long, the | Z A 
outer scales acute, scabrous on the keel; third scale | mae re 
shorter than the first, obtuse, bearing a usually bent | [= e = 
dorsal awn 2//-214’’ long, inserted below the middle. — 
. fe f 2 
New York and North Carolina. The American plant j i 
Summits of the highest mountains of New England, 
may be specifically different from the European. Summer. 
6. Agrostis perénnans (Walt.) Tuckerm. Thin-grass. (Fig. 367.) 
Cornucopiae perennans Walt. Fl. Car. 74. 1788. 
COIS perennans Tuckerm. Am. Journ. Sci. 45: 44. 
1843. 
Culms 1°-214° long from a decumbent or pros- 
trate base, weak, slender, simple or sparingly 
branched aboye, smooth and glabrous; ligule 1%4// 
long; leaves 2’-6’ long, 1’/-2/’ wide, lax, scabrous; 
panicle 4/—8’ in length, open, the branches 1/—2/ 
long, widely spreading, the branchlets and pedi- 
cels divergent; spikelets 3(’/-1// long, the outer 
scales acute, scabrous on the keel; third scale about 
three-quarters the length of the first, smooth and 
glabrous, not awned; palet small or wanting. 
In shaded damp places, Quebec and Ontario to Wis- 
consin, south to South Carolina and Tennessee. As- 
cends to 6600 ft. in North Carolina. Panicle usually 
light green, sometimes purplish. July—Sept. 
7. Agrostis hyemalis (Walt.) B.S.P. Rough Hair-grass. (Fig. 368.) 
Cornucopiae hyemalis Walt. Fl. Car. 73. 1788. 
Agrostis scabra Willd. Sp. Pl. 1: 370. 1798. 
Agrostis hyemalis B.S.P. Prel. Cat. N.Y. 68. 1888. 
Culms 1°-2° tall, erect, slender, simple, smooth and 
glabrous. Sheaths generally shorter than the inter- 
nodes; ligule 1’/-2’’ long; leaves 2/-5’ long, 1%4//-112/’ 
wide, usually erect, roughish; panicle 6’—2° long, usu- 
ally purplish, the capillary scabrous branches ascend- 
ing, sometimes widely spreading, or often drooping, 
the lower 3/—6’ long, dividing above the middle, the 
divisions spikelet-bearing at the extremities; spikelets 
34//-1’’ long, the outer scales acute, scabrous toward 
the apex and on the keel; third scale two-thirds the 
length of the first or equalling it, obtuse, rarely bearing 
a short awn; palet usually very small, 
In dry or moist soil throughout nearly the who e of 
North America except the extreme north. July-Aug. 
