138 POACEAE 
on the upper surface: apes Eas ER pale, 5-10 cm. uoi icu long- 
Men. spikelets 1- "n Pai red, what spreadin ng: glumes 1.5-3 cm. long, 
villous: lemmas about 6 mm. Re dede the awns 2-3 em. s (glumes and 
. to Tex. 
lemmas glabrous in E. siriatus A E provinces, Tenn 
and Wyo.)—(BLUE-JOINT.)—Rocky woods, various provinces, N. C. “to Tex., 
Wyo., and Vt. 
parius Wiegand. Stem rather slender, 90—150 cm. tall; leaf-sheaths 
glabrous; rs S D scabrous, 5-15 mm. wide; spike somewhat nodding, 
7-20 ¢ ong: glu narrow, som RR c but not bowed-out at base: 
ims Re hispidulo us, the awn straight, bc) 2-3 em. i LO 
banks and low ground, various provinces, "N Fla. to Ky., Ind., and Que 
100. HYSTRIX Moench. Erect perennials with flat leaf-blades and loosely 
flowered bristly spikes. Spikelets 2- to 4-flowered, sessile, 1 to 3 at each node 
of a continuous flattened rachis, horizontally 
spreading at maturity: glumes reduced to y 
short awns, the first usually obsolete, both N 4 
often wanting in the upper spikelets: lem- NN 
mas convex, rigid, tapering into long awns, E 
5-nerved, the nerves obscure except toward »p" 
the tip: palea about as long as the body of 
the lemma.—Four species, of temperate re- e" » 
gions, but widely scattered. 
1. H. Hy strix (L.) Millsp. Stem 60-120 
em. tall: leaf-sheaths glabrous or scabrous; 
blades mostly 7-15 mm. wide: spike 8-15 
em. long, the internodes of the rachis 5-10 
mm. long: spikelets 1-1.5 cm. long: lemmas glabrous, the awns 1-4 em. long, 
straight or rarely curved. [As prelia. dde Willd. |—(Bor epee GRASS. 
BOTTLERUSH.)—-Moist woods, various pro es, rarely Coastal Plain, N. C. to 
Okla., Minn., and N. B.—The inflorescence 2i ubies S à commereial bottle-brush. 
101. ARUNDINARIA Michx. Gregarious shrubs or tall reeds, with 
woody perennial — Mni flat leaf-blades with petioles articulate with 
the sheaths, and 1 racemes or panicles. Spikelets few- to many-flowered, 
large, ds dais ps rà PU Ra E above the glumes and between 
the florets: glumes unequal, Shorter than the lemmas, the first sometimes want- 
ing: e acute or acuminate, mucronate, faintly many-nerved: palea about 
as long as the lemma, prominently 2-keeled.— T wenty-five species, all except the 
ANS ‘in the tropies of both hemispheres.—CANES. 
Inflorescence borne on short leafless radical shoots Ko ~ year. 1. A. tect 
Inflorescence borne on leafy branches of the old c 2. A. 2 GO denen m: 
1. A. tecta (Walt.) Muhl. Stem 1-4 m. tall: leaf-blades 8-20 cm. long: 
paniele of few aggregate aida on Pid oe eg rather loose sheaths, 
the aaa obsolete k E Ay so: spikelets 2.5—4 cm. long, 5—10-flowered.— 
(SMALL-CANE. REED. Sw -CANE.)— 2 ur swamps und bogs, Coastal "Plain 
and occasionally Appalachian provinces, Fla. to La. and Md.—Stems in col- 
