M2 I'UACE^. 



Moiitaiiii, WiUianis; Colorado, Jones; Oro<roii, IlourU for U. S. 

 ])e])t. Agricul. iJoO; Califoniiii, Uratulegrc, Anderson. 



Montana, Colorado, Orogou to California. 



22. P. alpina L. S]). PI, GT (ITo:*.). /'• tlirarirata Vill, Hist, 

 ri. Daupli, 'Z:Vll (i:80-0). P. nirieijala l.ani. lllustr, 1:181 

 (1791). P. stolon if era Hell. Mi'in. Acad, 'i'lirin, 5: -.'15 (1T0:5). 

 P. hndensis Jlaonke, Willd. Sj). PI. 1 : :)!)■.' (IM):). /'. colli na 

 Host, Grain. Austr. 2:/. •)() (ISOl-!)). P. Ihennalis Pors. Syn. 

 1:1)0 (180,")). P. hrerifolin (laud. Alpina, :i::54 (1808). P. ilis- 

 color lloppc". Trill, Mem, Awid. St, I»oti-rsl), (VI.) 1:375 (18;n). 

 P. ti/rirfa Uegetscliw. cS: Horr, Fl. Sclnv. S.') (1840). P. snhlilis 

 Schnr, Verli. Sii'bt'nd. Vor, Naturw. 4:8(; (18");)). /'. stenanllia 

 Janka, Oostr, Bot. Zeitsclir. 14: :>8:5 (1S(;4). P mronensis Scliiir, 

 Knrni. PI, Transs. 77:? (LSiUi). /', nrmphihi Sdiur, Knnni. PI. 

 Transs. 773 (18(Ui). /'. ijelida Suliur, Kimni. I'LTranssj, 775 

 (18(W)). 



A soft erect tufted perennial, P^-40 cm, lii<i'li, smooth or nearly 

 so. Blades of sti-rile shoots ratiier thick, Hat or condiijilicate, 

 1.5-7 mm. lony, '.•-4-5 mm. wide, apex al)ru[)tly acute, those of 

 the culm 'l-?t in numher, 1-4 cm. Iool;": lii,nde "'-3 mm. lon,i;-. 

 Panicle ~-(i cm, long, densely ovate or olih)ng, or more open and 

 l)yramidal. apex sometimes nodding, rays in pairs, spikelets 

 bunched at, the ends. Spikelets broadly oval or y\V.v, usually 

 green, purple, and brown, ;5-4-'.)-llo\vere(l. 5-. mm. long; 

 cm})ty glumes subeipud, ovate or oval, acute, short-villously 

 pubes(;ent on the lower half of the keel and margins, lirst 

 1-3-nerved, 3-4 mm. long, second 3-iierve(l, '.\.'l-i^ mm. long, ex- 

 tending two-thirds the way or entirelv over the floral glujnc next 

 above; iloral glume concave-elliptieal, acute, ahno't acute oi- obtuse, 

 3.5-5 mm. long: pai 'a elli])tical, acute at both emls, ".'-toothed, 

 k'.!els ciliaie, ".'.5 :>..") mm. long. Anthers 1.7 mm. long, 



liabnidor, /Hodt/e/l; Tiower Canada, .1. Allen: .Michigan (Islo 

 Koyale), T. ('. Porter: Montana, Willinin.-. SrrilD.er, /•'. 'Drredi/, 

 338, 027; Colorado, ./oy/^v. ,/. llW/e, 1120: i'tali, ,/«//r,v, 12(i8. 



Greeidand, Canada, Kew Hampshire to Kocky Mountains. 



