iioi) 1'UACE.E. 



two-thirds us loii{? as tlio inteniodcs; ligulo liiocmte, 4 mm. long; 

 l)lii(U'S flat, scabrous, .'{()-4U mi. Utiig, AS mm. wide. I'uiiido v\- 

 scrtcd, pale, wliiti.sli ^^M'ct'ii, open, i)yri(midul, 10-15 cm. long; rays 

 mostly in tivi's, slender, seabroiirt. Ilowor-bcaring above* tlui miildlc 

 S|Mk('l»'ts s|)roiidin,ij:. open, tlic gltimcs thin, scabrid, lanc(H)lat('-a('U- 

 miiiatt', lirst ;J.5 mm. long, l-m.'rved, second 3 mm. long. :{-nervcd 

 below; lloral glume 'l.'-t mm. long, billd, tootlied, the twisted awn 

 attiiohed at the noteh and projecting above its glume 1 mm., hairs 

 somewhat in two sets, as long as the lloret; palea 1.1 mm. long, 

 rudiment less than ()..") nim. long, with hairs extending in all •.' mm. 



Washington, Sidst/urf in 1SS.'5 in Herb. Sciibner. 



•^2. C. breviseta (A. (Jray). Seribn. Mem. Torr. Clid), 41 (1804). 

 C. f<i/Ii'((iira \av. (itri'isiid A. CI ray, Man. Ed. 1 : 5,S;i (1S4H). C. 

 PirkeriHijii A. Oray, Man. Ed. 1:547 (I8r)(;). 



Perennial, with cri'oping rootsto(!k.s. Culms slender, rather stout, 

 30-50 cm. high, each bearing about 3 leaves. Sheaths longer than 

 the internodes; ligule 3-5 mm. long, decurrent; blades Hat, slight- 

 ly rough, those of the culm 8-14 cm. long. 4-5 mm. wide. Panicle 

 slightly exserted or the base included, purplisli, pyramidal, inter- 

 rupted, iS-l'-i cm. long: rays rather stout, .ij^pressed or diverging. 

 Spikelets narrowly elli})tical, acute, rough, hardly 4 mm. long; empty 

 glumes rather firm, nearly equal, oblong, j)()inted when flattened, 

 first 1-nerved, second 3-nerved; floral gh me rough, ovate, pointed 

 when spread, nerves obscure, 2.5-3.5 mm. long, the stout straight 

 or l)ent awn starting below the middle and exceeding its glume a 

 very little, hairs very few and short, rudiment, including its hairs, 

 but little over 1 mm. long. 



New Hampshire (Mt. Washington), E. Faxon. 



New P'ngland and Canada. 



23. C. Cusickii Vasey, Contrib. U. S. Nat. Herb. 3 : SI (1892). 

 Deyeu.via Cusickii Vasey, Coult. liot. Caz. 10:224 (1885). 



Culms from creeping rootstocks, erect, smooth, 90-120 cm. 

 high, internodes about 4 in number, besides the short ones near the 

 base. Sheaths nearly smooth, about half as long as the internodes; 

 ligule 4 mm. long, decurrent; blades of sterile shoots numerous, 

 flat, flexible, scabrid, 30 cm. or more long, 4 mm. wide, those of the 



