878 GR AMINES. (grass FAMILY.) 



broad, lobed, spikelet large ; lower pale acute, with awn one-third to 

 one-half its length. 



Var. conclcnsata, Boiss. Spike .02 to .08 long, .005 to .01 

 broad ; spikelets small ; lower pale short-awned, prominently nerved. 



Var. amblyautlia, Boiss. Spikes as in last; spikelets small; 

 lower pale minute, elliptical, obtuse, muticous and very short-awned, 

 often tubercled ; nerves nearly obsolete. 



2. K., Siiiaica, Boiss. .05; culms geniculate below. Leaves 

 soft, linear, acuminate, flat, hirtulous. Pauicle spike-like, obloug, 

 somewhat lobed ; glumes somewhat shorter than flowerets, oblong-lan- 

 ceolate, equal or the lower a little longer ; pales gladjvus ; the lower of 

 the lowermost floweret oblong-lanceolate, entire at tip, short-awned, of 

 upper flowerets bifid toward tip, awn longer thanjgale — Spring — Sinai. 

 62. MOLIXIA, Schrank. Lavender Grass. 



Spikelets laterally compressed, somewhat remotely 2-5flowered, 

 the uppermost floweret usually tabescent. Glumes membranous, con- 

 cave, 1-nerved, shorter than flowerets. Lower pale herbaceous, 5- 

 nerved, back convex, somewhat inflated at base, muticous, upper pale 

 membranous, 2-keeled — Perennials; spikelets panicled. 



M. caerulea, L. % Lavender Grass. .3 to .6, tufted, with old 

 stems and stumps of leaves at base ; culms erect, striate, stiff, with a 

 few leaves below, naked above. Leaves flat, linear, acuminate, sca- 

 brous-margined. Panicle .03 to .1 long, .006 to .01 broad, interrupted, 

 branches nearly opposite ; spikelets often molet-colored ; glumes ovate- 

 oblong, muticous, nearly equal ; lower pale obtuse — ■ August and 

 September — Alpine Lebanon. 



63. SPHEIXOPUS, Trin. Sphenopus. 

 Spikelets laterally compressed, 2-3-flowered, the flowerets some- 

 what remote, the uppermost sterile, jointed to the axis. Glumes un- 

 equal, membranous, continuous with pedicel and persistent. Pales 

 membranous, muticous, the lower oblong, obtuse, concave, 3-1-nerved, 

 the upper 2-lobed, scabrous at the two keels — Annuals ; spikelets mi- 

 nute, in a diffuse panicle. 



S. divaricatus, Gou. .1 to .2; culms slender, geniculate at 

 base, ascending. Leaves narrow-linear, channeled, at length involute. 

 Panicle at first compact, then diffuse ; pedicels cylindrical-club-shaped, 

 crowned with the persistent glumes; glumes obtuse, shorter than 

 flowerets, the upper thrice as long as the lower ; lower pale scarious 

 at tip, obtuse, somewhat keeled — Spring — Fields; common. 



64. CATABROSA, P. de B. Whorl Grass. 

 Spikelets 2-3-4-flowered with or without a sterile stalk, the lower 

 floweret sessile, the others stipitate, or 1-flowered. Glumes unequal or 

 equal, shorter than flowerets. Pales membranous, about equal in 

 length, the lower 3-nerved at least at base, obtuse or truncate-dentate; 

 the upper 2-keeled, 2-lobed — Perennials, with aspect of Poa. 



C. aquatica, L. 2f .3 to .5, aquatic; root-stock creeping ; culms 

 prostrate or ascending, rooting below. Leaves broad-linear, obtuse. 

 Panicle .15 to .2 long, oblong-pyramidal, branches whorled, at first 

 ascending, then horizontal or deflexed ; spikelets 2- (rarely 3-4-) flowered, 

 the upper floweret stalked ; glumes membranous at tip, much shorter 



