KKSTITK/K. r)77 



Boui»r(>us, as long nn its jrlnmo or shorter. A very viiriahlo uml 

 puzzliiijr spccios. 



Ort>;foii, lliiii'vll: Cfilit'oniia. J'rinf//o in ISSI. I^nrish r»88. 



I'tali. Wvoiniii,!,'. On';;on. ('aliroiiiiii, ami vicinity. 



{>. A. Nevadensis (N'a.si'v). /'. yinuhnsis Nascv. Ilnll. 'I'orr. 

 Club, \{):Wi (ISh:}). 



An erect lij;lit-git'en or ^ianenns ju'reiiiiial, ."io-SO cm. Iii;:li: 

 enlnis and leaves oltcn seubrons, sometimes, if not always, iliu'eious. 

 Second sluiatli from the top lon^jer than the internode, or half as 

 Ion;,' on plants of the same hei^dil ; li^^Miie ohtnsi^ or acute, linn, •.'-;5 

 mm. ion;;; blades (!ondui)licate or Hat, tiiose (tf sleriK' shoots 1(»-:J() 

 cm. long, about 2 mm. wide, the itoint often lon^' and narrow, 

 those of the culm ?-'.{ in number, erect, the n|»pcr 5-*2i> cm. Ion;;. 

 Panicle linear or slightly spreading, rather densely llowerod. l()-".'() 

 cm. long, many of the rays single, but some near the mitldle in threes 

 or fours, the longest 5-7 cm. long, tlower-bearing on the upper 

 third to two-thirds. Spikelets linear, linear-huiceolate or oval, 

 ;j-8-flowered, C-12 mm. long, u long joint of raehilla, l.;J-l.r mm. 

 long; empty glumes ecabrid, sul)e(iual, or the second usually the 

 longer, IJ-uerveil, first ovute-laneecdato to elliptical, 3-5 mm. long, 

 second ovul-lanceolate to oval, 3.'~*-(! mm. long; floral glunu* sca- 

 brid, oval, narrowly elliptical, with a lew slntrt hairs at the base, 

 purple and yellowish brown above, 4-5.".* mm. long, apex often 

 eroso and with a niucro, the 4 lateral nerves extending two-thirds 

 the distance from base to Jipex; ))alea linear, ^'-toothed, .scabrid, 

 ciliate on the keels, 3.5-4. "3 mm. long. The above is the result of 

 careful measurements in all the details of nine different jjlants; no 

 two are alike in all important respects. I must either make each 

 a variety, or rather prefer for the i)reseut to make uo varieties. It 

 shades off into A. lien's. 



Montana, Scribner for U. S. Dept. Agricul. 058, WiUimnx 

 579; Nevada, »/«««.*;; Oregon, I fotrelL 



Utah, Nevada, Montana to Oregon. 



10. A. Isevis (^'ascy). J'oa Iwris Vasey, ("ontrib. IT. S. Nat. 

 Herb. l:-273 (1893), not liorb. (Is::). 



A tufted rather slender perennial. 30-80 cm. high, with creep- 



