GKAMINE^. (GRASS FAMILY.) 801 



\o .0015 broad; olumes Lanceolate, keeled, more or less unequal; lo-u'er 

 pales appressed, lanceolate, acute or acuminate, mucronate or aristulate, 

 keeled, 3-nerved — Spring— Sands; coast to middle mountain zone'; 

 Sinai to Deserts about Dead Sea, Palmyra, and north-eastward. Varies 

 by insensible gradations into S. dicliotoma, Forsk. 



SO. BROMUS, L. Bkome Grass. 

 Spikelets pedicelled, more or less laterally compressed, many- 

 llowered, the upper flowerets often tabescent, the axis brittle. Glumes 

 usually unequal, shorter thau the adjacent floweret, usually keeled. 

 Lower pale herbaceous, concave or keeled, usually bidentate or bifid at 

 tip, aristate at or below tip, rarely muticous; upper pale membranous. 

 ■-2-keeled, entire or retuse, pectinate at keels with stiff hairs — Annuals 

 )r perennials, panicles more or less open. 



* Glumes unequal, the loicev 1-nerved, the upper Z-nervecl. 



;- Perennials. Spikelets after fiowering scarcely Iroader at tip. Root fibrous. 



X Sheatlis of marcescent root-leaves, entire or split into parallel fihres. 



1 B. crectus. 



X X Sheaths of marcescent root-leaves split into reticulated fibres. 



2 B. tomeutellus. 



1 1 Annuals. SinTcelets after fiowering broader at tip, 



8 B. tectorum, 4 sterilis, 5 flabellatus, G Ilaussknechtii, 7 Matri- 



tensis, 8 rigidus, 9 rubens, 10 fasciculatus. 



« 

 ' ^ Glumes nearly equal or unequal. Spikelets even after fiowering nar- 

 rower toward tip. 



t Floicerets, even in fruit, imbricated. 



\ Margin of lower p)ale more or less convex not angled. 



11 B. scoparius, 12 alopecunis. 



X X Margin of lower pale forming an obtuse angle at or above middle. 



13 B. squarrosus, 14 macrostachys, 15 intermcdius, IG mollis, 17 



jrachystachys. 



r t Flowerets in fruit not imbricated. Margin of lower pale obtusc-angUd. 



18 B. patu'.us. 



''' * * Species not sufiicienthj known. 



19 B. pulchcUus. 



i. B. crectii§,'Huds. 2^ .G to 1.5, erect, rigid. Lower leaves 

 linear, narrow, qmringly hairy, plicate; culm-leaves broader, flat. 

 Panicle erect-lanceolate, .15 to .2 long, branches slender, scabrous, the 

 lower 3-0 inn half-whorl; spikelets 3-8-flowered, linear-lanceolate, .02 

 to .025 long, .005 to .OOG broad when open, glumes linear-lanceolate, 

 acute; lower pale glabrous, linear-lanceolate, "5-7-nerved, 2-toothed at 

 tip, with a straight awn half to three-fourth its length — April to June -- 



Var. Syriaciis, Boiss. Leaves less unequal, the lowest long, flac- 

 cid. Panicle looser, the lower branches spreading — Fields and rocky 

 places; coast to middle zone of mountains. 



2. B, tonientclliis, Boiss. If .5 to .0, erect, rigid. Lower 



