868 



GHAMINE/B. (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 2, 

 sessile, feathered — Annuals. 



C. articulatus, Desf. © .3-, culms slender. Leaves convolute- 

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

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

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

 Sandy places; Antilebanon; Tiberias. 



40. HOL.CUS, L. Soft Grass. 



Spikelets 2-flowered, 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. 



Fig. 391. 



Fig. 302. 



Fio. 392. Spike of Holcus 

 annuus. 



1. H. laiiatus, L. 71 .5 to 



.8. Leaves linear-lanceolate to 

 linear, flat, villous. Panical oMong- 

 omte, .06 to .12 long, .04 to .06 

 broad, at length contracted, white; 

 glumes ovate-lanceolate, puberu- 

 lentor scabrous, ciliate at keel, the 

 ui^per retiise, mucronulate ; lower 

 pale of upper floweret with a hook- 

 ed, dorsal awn, barely exserted "^'i^nat, 

 from glume ~ April to June - 

 Fields; Lower zone of Lebanon. 



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

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

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

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

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

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

 Fields ; coast to middle mountain zone. 



41. TRISETIJM, 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 cxce'pt (4) slender, low, 

 1. T. pumiliim, Desf. © .03 to .15. Leaves linear, fiat, 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, 

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

 Arabia Petraja. 



