866 GR AMINES. (&RASS FAMILY.) 



* * Loicer pale aijoned. Rudimentary floweret a sialic and single 2^cde. 



3, A. iiiterrupta, L. Wind-Grass. .25 to .5, erect, slender. 

 Leaves linear, .05 to .15 long. Panicle oblong-lanceolate, .1 to .15 

 long, contracted, branches whorled, bearing spikelets almost to base ; 

 glumes unequal, lanceolate, acute; lower pale about as long as glume, 

 acute, asperidouSj -with a slender, flexuous awn below its tip, four times 

 its length — May and June — Fields; Jedaideh (Antilebanon). 



34. POL.YPOGOX, Desf. Beard-Grass. 



Spikelets 1-flowered, laterally compressed, the floweret perfect, 

 sessile. Glumes much longer than floweret, memlDranous, keeled, awned 

 a little below the undivided or bilobed tip. Lower pale awned below 

 the truncate-denticulate tip, or muticous, the upper smaller, 2-keeled. 

 Styles 2, terminal, very short ; stigmas plumose with dentate hairs — 

 (Ours) annuals, with minute spikelets, in a very contracted panicle 

 or spike. 



P. ]«Ioii§pelieiise, L. Meil-eth-thanel. Fig. 388. 

 Sar-el-Fdr. Dheil-el-Fdr. Dlieneb-el-Fdr. .3 to .8. 

 Panicle dense, .06 to .15 long, .02 to. 035 thick, more 

 or less interrupted ; glumes equal, scabrous-pubescent, 

 ciliate-margined, oblong, apex obtuse, entire; awn 

 thrice as long as glume ; lower pale half as long as 

 glume, 4-toothed and short-awned — April to July — 

 Moist, sandy places ; common. 



2. P. maritimiim, Willd. .05 to. 2. Pani- 

 cle spike-like, oblong, .01 to .04 long, .008 to .01 

 thick ; glumes equal, the bacTc beset with silvery scales 

 beloic, ciliate-margined, oblong-cuneate, hifidy the awn 

 arising from the sinus, four times as long as glume; 

 lower pale ojie-third as long as glume, apex 44oothed, 

 muticous — Spring — Sands ; coast ; damp woods at«-Spikeietof Poiypogon 

 base of Cassius; Jordan Valley. flow^S'^SdiaLVe'ir 



35. OASTRIDIUM, P. de B. Gastridium. Nit-Grass. 



Spikelets 1-flowered, perfect, laterally compressed, the floweret 

 sessile. Glumes membranous, keeled, acute, usually inflated at base, 

 much longer than floweret. Pales membranous, minute, the lower 

 broader, truncate-denticulate or with 2 bristles, furnished with a geni- 

 culate or muticous awn, inserted below apex or at base. Styles 2, short; 

 stigmas plumose — Aunuals, with aspect of Phleum or Koeleria. Leaves 

 linear, flat. 



1. €r. leiiclig^eruin, L. .3 to .4. Panicle spike-like, taperiug 

 at both ends, .05 to .1 long, .006 to .008 broad, looser in flower, con- 

 tracted in fruit ; glumes lanceolate, acuminate, scabrous at Iceel, otherwise 

 glah'ous, glossy, the upper shorter; lower 2^cile hirsute, truncate-deotate 

 at tip, usually with an awn under tip longer than glume, rarely muticous 

 — Spring — Grassy places ; coast; Antilebanon; Banias. 



2. O. scabrum, Presl. Subbeileh. .2. Spike .04 to .05 long, 

 .003 to .004 thick; glumes scabrous over outer surface, lanceolate, acute, 

 the upper somewhat shorter; loicer 2)(''l^ nearly glabrous, tiunca.te-den- 

 tate at tip, wsually not aimed — June and July — Fields; coast to mid- 

 dle zone of Lebanon. 



