GRAM1NE.E. (GRASS FAMILY.) 885 



7. P. Tinioleoiiti§, Held. 21 .1 to .2; root fibrous; Fig. 409. 

 culms tufted, slender, bulbous-expanded at base. Leaves 

 convolute-setaceous, scabrous. Panicle .015 to .02 long, 

 ovate, dense, branches short, scabrous, solitary or twin; 

 spikelets ovate, 6-10 flowered, .006 long; glumes oblong, 

 nearly equal, acuminate; axis not fleecy ; lower pale oblong, 

 acutish, scarious at margins and tip, silhy at IceeU and mar- 

 gins — April — Jebel Qasyun (Damascus) ; between cl-Bei- 

 da and el-Jebah (Syrian Desert). 



8. P. macroglo§sa, Hackel (in letter). 11 .13 to .2; 

 root fibrous ; culms tufted, slender, bulbous-expanded at base, sheathed 

 with root-leaves, leafy only one-third their length. Leaves convolute- 

 filiform, scabrous; ligule lanceolate, scarious, long-acuminate, that of 

 radical leaves long-exserted. Panicle ovate to oblong, .015 to .03 long, 

 .01 to .015 broad, compact, branches short, scabrous, solitary or the 

 lower twin; spikelets oblong, .004 long, 3-4-flowered; glumes nearly 

 equal, ovate, mucronate; axis not fleecy ; Io^qv ^^\q reddish-purple^ ob- 

 long, scarious-margined, mucronate, glabrous throughout— Islsij — Aintab. 



The only specimens thus far seen are the so called viviparous forms. 



9. P. iiemoralis, L. If .5 to .8; root fibrous; culms slender, 

 leafy to top. Leaves linear, acute, with short ligule or 0. Panicle ob- 

 long, .1 to .15 long, at first spreading somewhat then contracted; 

 branches capillary, scabrous, 5-2 together in whorls; spikelets ovate- 

 lanceolate, green, 2-5-flowered; flowerets with little or no fleece; 

 glumes nearly equal, lanceolate, acute, keel scabrous, margins narrow- 

 membranous; lower pale lanceolate, scarious at tip, obtusish, pubes- 

 cent toward base of keel and margins — August — Woods; Am^nus. 



* * Lower 2^ale ollojig, olsoletely ^-nerved toward base. 



10. P. Per§ica, Trin. .3 to .6; culms usually numerous, 

 slender, erect, leafy. Leaves narrow-linear. Panicle ovate-oblong, .1 

 to .2 long, branches capillary, whorled, 6-10 together, spreading; ped- 

 icels stiff, scabrous, usually longer than spikelet; spikelets oblong, 

 .005 to .006 long, loosely o-13-flowered; glumes lanceolate, acute, the 

 lower 1-nerved, about half as long and broad as upper, which is 3- 

 nerved and shorter than the nearest floweret ; lower pale glabrous or 

 puberulent, obliquely truncate at hyaline tip, with or witliout mucro — 

 Spring — Sandy and dry places; common. 



Var. alpiua, Boiss. .03 to .1. Branches of panicle longer. 

 Spikelets 2-5-flowered. Lower pale usually acute — Alpine regions of 

 Lebanon and Hermon. 



Var. major, Boiss. Spikelets 7-15-flowered, .006 to .009 long, 

 flowerets more scattered. Lower pale obtuse — Fields and waysides. 



73. OLYCERIA, R. Br. Sweet Grass. 

 Spikelets (in ours) 7-13-flowered, more or less laterally compressed, 

 rachis brittle. Glumes concave, obtuse, muticous, unciiual, shorter 

 than flowerets. Pales deciduous together, muticous, the lower con- 

 cave, not keeled, obtuse, 5-7-nerved, the upper membranous, 2-keeled, 

 bifid at tip, the keels ciliolate— Perennials; root-stock creeping; culms 

 rooting at base. Leaves broad-linear, flat, the lower often floating; 

 panicles (in ours) .2 to, 3 long, .04 to .00 broad; spikelets. 01 to .02 long. 



