853 



GRAMINB^. (©KASS FAMILY.) 



H. fasciculata, Desf. If .3 to .8; culms ascending or decum- 

 bent, rooting at nodes. Leaves linear, acute, glabrous, channelled, 

 keeled. Sheaths hairy at mouth. Spikes solitary or 3-6-clustered in 

 the axils, peduncled, -with a spathe-like sheath at base, straight or in- 

 curved, .07 to .14 long, .003 to .004 thick; outer glume short-lanceo- 

 late, acute — August — Wet places; coast. 



14. HETEROPOGOIV, Pers. Heteropogon. 



Spikelets 2-ranked, appressed to a simple spike, two in each joint, 

 one sessile, the other pedicelled, all the lower spikelets staminate, desti- 

 tute of an awn, the upper sessile spikelets pistillate, aristate, the pedicel- 

 led staminate or neuter, not aristate, all 2-flowered, the lower floweret 

 neutral, reduced to a pale. Staminate sjnl^elets somewhat comj)ressed ; 

 glumes 2, of about equal length, acute, the lower membranous-coriace- 

 ous, oblique, keeled-winged, the upper narrower; pales unequal, mu- 

 ticous. Stamens 3. Pistillate spikelets teretish; glumes 2, nearly of 

 equal length, coriaceous, rusty-hispid, the lower convolute, closely in- 

 vesting the upper ; lower pale linear, produced into a long, bent, wavy 

 awn ; pale ; styles 2, terminal ; stigmas elongated, feathery, coming 

 out at the tip of the spikelet ; caryopsis linear-oblong — Perennial herbs 

 with spiked inflorescence. 



H. Allionii, Dec. 21 Tufted; culms erect, compressed. Leaves 

 linear, glabrous, flat; sheaths with bearded mouth. Spikes terminal, 

 solitary ; rachis at the lase of the staminate spikelets glabrous, at that of 

 the pistillate hirsute; glumes of the staminate spikelets glahrous, of the 

 pistillate tawny -hispid ; awns. 04 to .06 long, pubescent below joint, sca- 

 brous above — Summer — Sunny rocks ; Lebanon. 



15. AiVDROPOGON, L. Beaed-Geass. 

 Spikelets in pairs at the joints of the spikes, (the terminal rarely in 

 threes) one sessile, perfect, the other pedicelled, staminate or neuter^ 

 in ^ which latter case it is often a mere vestige. Flowerets of fertile 

 spikelet 2 ; glumes herbaceous or chartaceous, 

 longer than floweret; the lower floweret neuter, 

 reduced to a membranous pale or 0; lower 

 pale of perfect floweret usually bifid at tip, 

 short, narrow, long-awned or altogether re- 

 duced to an awn; upper pale minute or 0. 

 Stamens 3. Styles 2, terminal. Stigmas elong- 

 ated, feathery. Caryopsis oblong, free, with 

 a dot-like hilum at the base of its ventral aspect 

 --Perennial herbs, with spikelets imbricated 

 in solitary or clustered, non-bracteateor bract- 

 ed, spikes, the rachis more or less hairy. 



* Spikes solitary at the apex of culm or its 

 tranches^ linear. 



1. A. foTeolatu§, Del. 2f .3 to .4; 



glaucescent, tufted ; root fibrous ; culms erect 



or ascending, leafy, hirtulous at nodes, simple 



or branching. Leaves sparingly ciliate at lower 



part of margins and mouth of sheath. Spikes 



.04 to 05 long, 003 broad (without awns) ; g ,,, ,, Andropogon 



spikelets 2-ranked ; rachis and pedicels white- foveoiatuv 



Fig. 374. 



