868 



GBAMINE-S. (grass FAMILY.) 



ending opposite the tip of the pale, in a bearded disc, from which 

 arises the slender upper joint, ending in a club-shaped tip. Stigmas 3, 

 sessile, feathered — Annuals. 



C. articulatu§, Desf. .3-, culms slender. Leaves convolute- 

 setaceous. Panicle erect, .1 long, spreading during liowering, con- 

 tracted before and after ; branches capillary, several times trichotomous. 

 Spikelets short-pedicelled; glumes greenish and reddish — Spring — 

 Sandy places ; Antilebanon ; Tiberias. 



40. HOLCU§, L. Soft Grass. 



Spikelets 2-flo,wered, laterally compressed. Glumes longer than 

 flowerets, boat-shaped, nearly equal, the upper broader, 3-nerved, the 

 lower 1-nerved. Flowerets stipitate, the lower perfect, muticous, the 

 upper staminate, its lower pale aristate below tip. Upper pales about 

 as long as lower, narrower, 2-keeled. Stigmas short, plumose with 

 dentate hairs — Herbs ; panicles loose or spike-like. 



1. H. laiiatu§, L. U .5 to Fia. 391. Fia. 392. 

 .8. Leaves linear-lanceolate to 

 linear, flat, villous. Panical oNong- 

 ovate, .06 to .12 long, .04 to .00 

 broad, at length contracted, white ; 

 glumes ovate-lanceolate, puberu- 

 lent or scabrous, ciliate at keel, the 

 tipper retuse, mucronulate ; lower 

 pale of upper floweret with a hook- 



ed, do.^.l aw. barely exserted '^■^i.'^JSetS?''"^ 

 from glume-Apnl to June- j,,„ 3,5. ^ ,^, „„,„,„„ 

 ±* lelas ; Lower zone of Lebanon. annuus, 



2. H. annuus, Salzm. .2 to .4. Leaves linear, 

 flat, soft-pubescent. Panicle cylindrical-oblong, .03 to .05 

 long, .008 to .01 broad; glumes pubescent, the lower 

 lanceolate, with an awn shorter than itself, the upper ovate, 

 toith an awn as long as itself ; lower pale of upper floweret with a bent 

 and twisted, dorsal awn, exserted from glume — April to June — 

 Fields ; coast to middle mountain zone. 



41. TRISETUM, Pers. Trisetum. 



Spikelets laterally compressed, 2-6-flowered, flowerets perfect 'or 

 the uppermost tabescent, all but the lowest stipitate. Glumes keeled, 

 membranous, 1-3-nerved. Lower pale concave, bicuspid at tip, with a 

 bent or straight awn usually twisted below, inserted at back below tip. 

 Stamens 3. Stigmas 2, sessile, plumose. Caryopsis destitute of groove, 

 glabrous — Herbs ; spikelets small, panicled. 



* Annuals. Stems except (4) slender, low, 



1. T. puuiilum, Desf. .03 to .15. Leaves linear, flat, pu- 

 bescent. Panicle ovate-oblong to oblong, .01 to .025 long, compact; 

 spikelets .005 long, about 4-flowered; glumes somewhat shorter than 

 flowerets, ovate-oblong, about equal in length, but the lower a little 

 broader and villous, the upper villous throughout or only at back; 

 hairs of axis and wart as long as pales ; lower pale punctate-scabrous, 

 awn straight, as long as pale — March to May — Desert sands; 

 Arabia Petrsea. 



