GRAMINE^E. (GRASS FAMILY.) 571 



3. E. StriatUS, 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 ; glumes 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. 

 VILIXJSUS (E. villosus, Mithl. !) has a somewhat stouter spike and very hairy 

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

 and smallest-flowered species. 



* * Glumes and palecB both awnless and soft in texture: reed-like perennials. 



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

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

 5- 7-nerved glumes (!' long) with the pointed palese soft-villous, the apex oftho 

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

 Huron, Superior, Maine (Tuckerman ;) and northward. (Near E. arenarius.) 



46. OYMNOSTICIIUITI, Schreb. BOTTLE-BRUSH GRASS. 



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

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

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

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

 <<Tt^os, a rank). 



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

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

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

 Einoothish. U (Elymus Hystrix, L.) Moist woodlands; rather common 

 i"uly. 



47. AIR A, L. (in part). HAIR-GRASS. 



Spikelets 2-flowcred, in an open diffuse panicle ; the (small) flowers both per- 

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

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

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

 t.wn 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 scarious or mem- 

 branaceous, delicately 3 - 5-nerved, eroded or toothed at the truncate summit ; the 

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

 about equalling the flowers. 



1. A. flexnosa, L. (COMMON HAIR-GRASS.) Culms slender, nearly 

 naked (1- 2 high), from the small tufts of involute-bristle-form leaves (!'-(>' 

 long) ; branches of the small spreading panicle capillary ; awn about twice the 

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



2. A. caespitosa, L. Culms in close tufts (2 -4 high); leaves flcut, 

 iijiear ; panicle pyramidal or oblong (6' long); awn barely equalling the palea. 



1|. Shores of lakes and streams ; not rare northward. June, July. (Eu. ) 



