''■">'• GUAMIN1.LE. 285 



i«iow ,1,0 i,.,„i, ,ij „4 ^f I'c a";;'Ui:r!;;,i;;:'»;;i'"'' """• "" ""'>■ '""" ""■'"s "^■■"■•"y 



2. S. OCOidentalis, Tl.iirbor. C.llms slender, 1 to 2 feet l,ic-l, soniewlnf ',r, 



loiirti. mu,, tliaii tl o upper, bruwmsh when ripe, pubescent with an,)ressed hair, 

 especja 1^ below; ca k.s short acute, the apex ^lith'a short clistiuct c' Liro ^ irs '• 

 aun 1, niches long, twice bent, ami plumose to the upper geniculation with rXi' 

 coaeha.rs which are loss than a line long below and shorter above : anthe niked 

 -r.ot. Wilkes Lxped. 483 ; Watson, JJot. King Kxped. 380. 



in the Siena,, oxtcndin^ into O.ogon ; also Neva.la. Mr. P.olan.lPr ren.ark.s in Pro. 



. . . '^xped. 380. 



toninioii in the Siena,., 

 ("aiif. Acn.I. 

 IV furred to t! 



3. S. chrysophyUa, E. Dosv. Culms forming very dense tufts, G inches to '> 

 tlL tu '"T' '''''''' '^^ bninched, and clothed below with withere.l sheaths- 



•^.d J; ur 1^' '' '''', '"'? ".' ''''''' '^'''^y •''"•^ setaceously involute and' 

 1 gid shghtlj scabrous an.l with the sheaths and panicle tawny yellow • li^aile 

 short ; upper sheath usual y inflate.l : panicle contracted, mostly included beFow 

 4 to G inches long, with short appros.sed 1 - 3-nowerod rays: glumes about 8 line; 

 long, nearly cpial acuminate, hyaline, r)-nerved : iloret including a medium callus 

 4 to 5 ines long; lower palet twice the length of the upper, covered with spreadim'r 

 white hairs, bearing two minutn lobes at the apex and an awn 1 to IJ indies Ion- 

 which is bent near the middle, plumose below the bend with silky hairs 2 lines Ion- 

 and smooth above: anthers naked.— Gay, Flor. Chil. vi 278 t 7G fi- 2 



Giam. Mex. Bound, med.), theothei in the mountains of Colorado, S. MomjoUca, furcz. 



* * Axvnnot plumose, often strongly imbesccnt. 



•*- Panicle open with spreadinr/, often scciind, fcir-flowered rays. 



4. S. COmata, Trin. & Rupr. Culms 1 to 4 feet high, stout, mostly scabrous ; 

 leaves involute, roughened, the mdical ^ or J the length of the culm, the leaves on 

 which are much shorter, the uppermost very small or reduced to a mere sheath ; 

 hgulo conspiciums, acute, 2 or 3 lines long ; sheaths loo.so, the uppermost somewhat 

 inflated, smooth, at length shorter than tiie iuternodes : panicle included at base by 



