GKAMINE^. (grass FAMILY.) 571 



3. E. Stria.tns, Willd. Spike dense but slender, upright or slightly nod- 

 ding (3' -4' long) ; spikelets mostly in pairs, 1-2- (or rarely 3-) flowered, mi- 

 nutely bristly-hairy; glvunes linear-awl-shaped or truly awl-shaped, bristle-awned, 

 about thrice the length of the flowers, not counting their capillary awn (which is 1' 

 long) ; leaves (rather narrow) and sheaths smooth or hairy, or downy. — Var. 

 viLLdsns (E. villosus, MuU. 1) has a somewhat stouter spilte and very hairy 

 glumes. — Rocky woods and banks; rather rare. July. — The most slender 

 and smallest-flowered species. 



# * Glumes and paleas both atuntess and soft in texture ; reed-like perennials. 



4. E. indllis, Trin. (not of E. Br.) Stout (3° high) ; spike thick, erect 

 (8' long) ; spikelets 2 or 3 at each joint, 5-8-flowered ; the lanceolate pointed 

 5- 7-nerved glumes (I' long) with the pointed paleas soft- villous, the apex of the 

 culm velvety ; rhachis of the spikelets separating into joints. — Shore of Lakes 

 Huron, Superior, and northward. (Near E. arenarius.) 



46. GYMNdSTICHUM, Schreb. Bottle-bbush Gbass. 



Spikelets 2-3 (or sometimes solitary) on each joint of the rhachis, raised on 

 a very short callous pedicel, loosely 2 - 4-flowered (when solitary placed flatwise 

 on the rhachis). Glumes none ! or small awn-like deciduous i-udiments (whence 

 the name of this genus [otherwise nearly as in Elymus], from yvfuios, naked, and 

 arl^os, a rarJc). 



1. G. HystriX, Schreb. Spike upright, loose (3' -6' long); the spread- 

 ing spikelets 2-3 together, early deciduous ; flowers smoothish, or often rough- 

 hairy, tipped with an awn thrice their length (1' long); leaves and sheaths 

 smoothish. l]. (Elymus Hystrix, L.) — Moist woodlands; rather common. 

 July. 



47. AIR A, L. (in part). Haiu-Grass. 



Spikelets 2-flowered, in an open diff'use panicle; the (small) flowers both per- 

 fect (sometimes with a third imperfect), usually shorter than the membranaceous 

 keeled glumes, hairy at the base ; the upper remotish. Lower palea truncate 

 and mostly denticulate or eroded at the summit, bearing a slender bent or straight 

 awn on its back. Stamens 3. Styles plumose to the base. Ovary glabrous. 

 Grain oblong. (An ancient Greek name for Darnel.) 



§ 1. DESCHAMPSIA, Beauv., Trin. — Lower palea thin and scarions or mem- 

 branaceous, delicately 3 - 5-nen'ed, eroded or toothed at the truncate summit ; the 

 aim attached mostly a little above the base : grain not grooved, mostly free : glumes 

 about equaling the flowers. 



1. A. fleXHOSa, L. (Common Haie-Grass.) Culms slender, nearly 

 naked (I°- 2° high), from the small tufts of involute-bristk-form leaves (l'-6' 

 long) ; branches of the small spreading panicle capillary ; aum about tmce the 

 length of the palea. U —Dry places; common. June. (Eu.) 



2. A. csespitosa, L. Cuhns in close tufts (2° -4° high); leaves flat, 

 linear; panicle pyramidal or oblong (fi' long) ; awn barely egualling the palea, 

 U — Shores of lakes and steeams ; not rare northward. June, July. (En.) 



