0<>6 I'OACK.K. 



Imcur-liiiircnlutc, 5-0. Tt iiiin. Imip, vt'iy acute, ^'lnlnous, tlic awn 

 liulf as long as tlic glniiic or longi'r; j)al('a liiiour-oMong. apex en- 

 tiro or with two short Icetli. 



Nortiicrn Michigan. FancrJI, \\ herkr ; Itritisii Coliinihia, 

 Macoun; Washington, E. li. Lnhi'. 



Var. glaucescens ihick. Monog. Kcst. Eu. !;{!• (IHM'J). /•'. 

 (jlnmu'st't'tix Ilcgctschw. V\. Schw. 93 (1840). 



It rescnilth'S /' rnhjaris, o.\-ccj)tiiig that the spikoh'ts arc 10 

 nun. or more long: floral gluini' (1-7 nun. long, the awn rather long. 



'rcnnesscc (('nnil)orlan<l IJiver), (f<i//in(/i'r in lSH»i. 



Var. fallax ('riuiill) Hack. Fes. En. I4-' (lH8-,»). F. fiiUar 

 ThnillFl. Tar. Kd. '.:•.'>{) (iroo). 



Densely ca'S{)itose. glan(H)us. strongly tinged with purple <»r 

 violet, 40-00 cm. high, blades obtuse, in sci-tion obtusely 0-angled, 

 rarely suboval. 0.7-O.S mm. diam. Panicle G-8 cm. long, ra_\s 

 densely ilowered. the longest 15-4 cm. long. Spikelets elliptical- 

 lanceolate, .^>-7- flowered, 8-10 mm. long, second ginmo lanceo- 

 late, 3-iu'rved, extending to the middle of the floral glume; 

 floral glume 5-0 mm. long, rather abruptly pointed, with a very 

 short awn. Anthers 3.7 mm. long. 



Montana, Ant/i'rso)i: Washington (Seattle), Jfo/ivJI \u 1S80. 



Washington, Oregon, and Uocky Mountains. 



Var. trichophylla (iaud. Hack. Monog. Fes. Eu. 141 (1883). 

 /'. irirhophyUa Ducros. Gaud. Fl. Helv. \:'l^>> (1838). 



Culms slender, about 00 cm. high, curved below and ascending 

 from creeping rootstocks. lilades obtuse at the extrenu' apex, 

 folded, setaceous, destitute of buUiform cells, 0.4-0.5 mm. diam., 

 tlio lower sheaths torn into shreds, glabrous. Panicle linear-ob- 

 long, 0-10 cm. long. Spikelets lanceolate, 7 mm. long; floral 

 glume linear-lanceolate, 4..'>-5 mm. long, glabrous, bearing a very 

 short awn. 



Oregon, Howell; also found in Europe. 



Var. longiseta Hack, iiied. F. longiiteta Ilegetschw. Fl. Schw. 

 93 (1840). 



Culms 30-70 cm. high. Leaves 3 in number, blades involute or 

 conduplicate, smooth, faintly nerved, terete or oval, ir)-30cm. long, 



