FESTrcKj-:. 58r) 



m. Leaves of culm 4-5 17 



C. Lij,MiIo 1-3 mm. long, biauriculate, blades of the culm 

 1-2 cm. long, rigid, curved, setaceous. Ovary obo- 



vate, glabrous 18 



e. Ligulo minutely biauriculate, blade conduplicate, sub- 



sctacoous, in transverse section obtusely six-angled. . 10 

 e. Ligule symmetrically biauriculate, blade involute or 



conduplicate (n) 



n. Apex of ovary pubescent 30, 31 



Ti- Apex of ovary glabrous (k) 



k. Kays single 33 



k. Hays in twos, threes, or fours 3:), ;3+ 



e. Ligule of cdm-leaves inecpiilaterally biatiriculate. . (o) 



o. Blades filiform, involute 35 



0. Blades usually ilat, rarely conduplicate, 3 mm . diam. 3(» 

 e. Ligule of culm-leaves auricnilate on one side, Idades 



often of two forms 37 



1. F. microstachys (Monro) Xutt. Journ. Acad. I'hila. N. S. 1 : 

 187(184:). Vuljiia microstitrhiia :\[unro, Henth. IM. llartw. ;U3 

 (18:u»-o7). 



("ulms slender, erect, 10-40 cm. high. Sheaths shorter llian the 

 internodes, smooth or pubescent; ligule 0.5 mm. or less in length; 

 blades 3-4, erect, slender, ;>-8 cm. long. Panicle erect, i-acemose 

 or spicate, 3-9 cm. long, rays stilT, channoUed, single or some of tht! 

 lowest in pairs, ere(;t, spreading or deflexed, the longest^ 1 - :) cm. 

 long bearing 1-8 spikelets. Spiki'lets l-5-Howered on clavate pedi- 

 cels, joint of racliilla over I mm. long; empty glumes involiiic, lirst 

 3-5 mm. long, second 5-8 mm. long; floral glume convi'x, in- 

 volute, acuminate, scabrous, 4-7 mm. long, besides the awn, which 

 is G-10 mm. long; palca scabrous, bearing two short awns. Stamen 

 I. Very variable. 



Oregon, Jlnireil; C'alifornia, Joiivs^ Ormtl . 

 Arizona to British America. 



Yar. ciliata A. Cray. Axis, rays of panicle, glumes and tloral 

 glume strongly ciliato. 



Oregon, Hoicr/l; also found in California. 



