«11AMINE^. (GRASS FAMILY.) 



903 



Fig. 421, 



at hass of culm enveloped lyafilrous covering. Spike somewhat nodding, 

 .1 to .15 long, .01 to .03 broad, flattened, rachis not brittle ; sterile 

 spikelets as long as or somewhat longer than fertile ; glumes of lateral 

 flowerets setaceous from base, longer than pale; glumes of fertile 

 floweret lanceolate, ciliate at base, setaceous above, longer than pale; 

 lower pale of fertile floweret with an awn 3-4 times its length — Spring 

 and summer — Grassy places; common throughout. 



Var. brevispicatum, Post. Spike .02 to .04 long — Flanks of 

 Hermon. 



92. EL.YMUS, L. Lyme Grass. 



Spikelets 2-4 at teeth of rachis, all sessile and fertile, 2-oo -flowered, 

 or 1-flowered with a rudiment of a second. Glumes 2 to each spike- 

 let, antero-lateral, forming an involucre at the base of the pair or cluster 

 of spikeiets. Pales opposite the rachis, the lower concave, entire, mu- 

 ticous or aristate; upper pale membranous, 2-keeled, scabrous at keels, 

 truncate or 2-toothed at tip — (Ours) Annual herbs. 



E. Caput ]W[eclu§ae, L. Medusa's Head .3 

 to .4, erect. Spike somewhat nodding, (including 

 awns) .06 to .15 long, .03 to .05 broad; ?ix\snot brit- 

 tle, glabrous; lowermost spikelets single, the rest twin, 

 1-flowered with a rudiment of a second; glumes subu- 

 late, rigid, twice as long as pale, ascending or spread- 

 ing; lower pale linear, 3-nerved, scabrous, with an 

 awn .02 to .1 long; upper pale truncate — May to June 

 -Rocky, sandy places; Antilebanon to Damascus, 

 Palmyra, Aleppo, Aintab, and northward. 



2. E. Delileanus, Schult. © .1 to .3, genicu- 

 late-ascending. Spike sJifE, oblong, .02 to .05 long, 

 .015 to .03 broad ; axis brittle, bearded with white 

 bristles; spikelets twin, 2-ranked, 2-flowered, the 

 neutral floweret long-pedicelled; glumes coriaceous, 

 lanceolate-subulate, scabrous, tapering into an awn, 

 equal to that of lower pale; lower pale oblong-lanceo- 

 late, concave, 5-nerved, scabrous, tapering into a flat- 

 tish awn .02 long — April and May — Waste fields; 

 coast to middle mountain zone and interior tablelands; Palrayrene 

 Desert, 



Spike of Elymus 

 Delileanus. 



