No. 11. 

 STIPA OCCIDENTALIS Thinh. in Watson, Rot. King Exped. 380. 



Planf pcrenuial with cespito.se, alino.st bulbotis base, sniootli and glaucous or witli 

 short, retrose pubescence, especially below. 



Viilms erect, siinph', slender, terete, 12 to 20 inches high. 



fjcari's from the base, witli scarions, usually reddish sheaths, and narrow, filiform- 

 convolute, sliarppointed, hispid blades -' to (! iuches long. Leaves of cuhn 1' or 3; 

 sheaths close, striate, hispid, closely pubescent or nearly smooth, short<'r than the 

 iiiternodes; blades closely convolute, almost setaceous, 1 to - inches long; llgule 

 prominent, exserted, lacerate, 2 to 2.J lines long. 



InfloreHcence a slender, erect panicle 3 to 4 inches long, often included at base; 

 branches mostly in twos, visually erect, 1 to 2 inches long, bearing 2 or 3 pedicellate 

 spikclets. 



Spikeletx lanceolate, turgid, 1-flowered, 4J to 6 lines long; empty glumes appre.ssed, 

 lan<-colate, acute, thin. ])ur]ilish below, membranaceous above, smooth; first glume 

 obscurely "i to Tncrveu at base, Tt to (i lines long; second glume about a line sliortcr 

 and 3-nerved; stipe obcouical, scarcely curved, acute, pubescent, i line long; tloret 

 S|>iiiillt'-shaped, ta])ering to apex, 3 lines long, A line thick; tloral glume thin, charta- 

 ccoiis, pubescent, i)lainly 5-nervc(l; awn articulatetl. persistent, Hattened, twisted, 

 plumose on lower half, bent at middle, 1.1 to 2 inches long; i)alet oblong, boat-shaped, 

 ))iibcscent on hack and at obtuse aix'x, 2nerved. 2 to 2.1 lines long; anthers naked: 

 lodicules nunut(^; giain s))indl(' sliapcd, reddish with a longitudinal white line on ven- 

 tral side, slightly opaipie, 24 lines long and J line thick. 



PlAtk XI; fl, spikelet partly di.ssected, (enlarged about three times. 



Tommon in tlie Sicnas and Cascade ranges from central Califoi'nia to Washington 

 and extending into western Nevada. Mr. iJolander states thai lliis species is nnu'li 

 esteemed l>y sheep-growers. 



