OHDEK 155. GKAMINE^E. 



390 



(and gl.) carinate, often bristle-pointed. U Culms tufted, erect, 

 simple, with dense, narrow panicles. 



K. crlstata Sm. Culm 20 3<y, lafy below; Ivs. flat, erect, pubes- 

 cent, narrow, 23' by 12"; pan. spike-like, 35'; spkl. (a) 2", silvery, 

 about 2-fl\vd., with an abortive pedicel. (o, a flower.) Mid., W., and N. 

 /3. grAdUs. Slender and delicate, with a simple pan. (K. nitida, N.) 



40. DIARRHENA, Raf. Panicle simple, racemous. Glumes 



2, very unequal, rigid, acuminate-mucronate, 2-5- 

 flwd. (d) Pales (e) cartilaginous, lower cuspidate, 

 3", upper much smaller, emarginate. Grain large, 

 loose in its pericarp. SStam. 2. y Culm rigidly 

 erect, 15 30'. Lvs. mostly radical, broad-linear. 

 D. Americana Beauv. Woods and river-banks, O. to 111. Aug. (Festuca, MX.) 



41. FESTUCA, L. FESCUE G. Spkl. 3-oo-flwd. Glumes unequal, 

 mosfly carinate. Pales firm, the lower rounded 



(not carinate) on the back, obscurely veined, awned 

 from the tip, or awnless. Sta. 1 3. Grain mostly 

 adhering to the upper pale. Spkl. panicled or ra- 

 cemed, the fls. remote, not webbed at base. 



Flowers lanceolate to oblong, awnless. Culms 



tall, leaves flat Nos. 5 7 



Flowers subulate, awned at the tip. Leaves 



mostly involute. . .(a;) 



x Awn much shorter than the flower. 7{ . . . . Nos. 3, 4 

 x Awn as long as the fl. or much longer. (T)..Nos. 1, 2 



1 F. OTyurus L. Culm 512'; Ivs. subulate, 23'; 



glumes minute, equal, 4-ti-fl wd. ; awn 6", twice longer 

 than the pale ; panicle slender. M., S. 



2 F. tenella Willd. Slender F. (a, 6) Culm wiry-filiform, often in tufts, 612'; Ivs. 



linear-setaceous; pan. simple, narrow, 23'; spkl. 6-9-flwd., 4 6" long; flowers 

 pnberulent, brown ; awn about as long (2"). Sandy. June, July. 

 S F. oviiia. L. Sheep's F. Culm erect, 610'; Ivs. numerous below, very nar- 

 row, 2 1' ; pan. simple, narrow, 2 4' ; spkl. ovate, 3-5-flwd. ; fls. lance-oblong, 1J V , 

 the awn J I as long. 11 Pastures and fields. A valuable grass. June, Europe. 

 /3. vlv'para. Spikelets transformed to leafy tufts. Mountains, N. 



4 F. diirluscula L. Hard F. Culm erect. 12 18' ; Ivs. linear, flattish; pan. ob- 



long, spreading, 35'; spkl. 5-8-flwd., teretish before flowering; fls. lance-subulate, 

 2J", the awn 1" or less ; pales equal, y Valuable. Common. June, July. 

 (3. rtikra. Spikelets 7-9-flwd., fls. pubescent ; the herbage reddish. N. 



5 F. pratensis Huds. Meadow F. Culm erect, 2 3f; Ivs. lance-linear ; pan. 4 6' 



ony, narrow, with short branches; spkl. few (10 25) and large, tereiish before flow 

 ?.ing, 69" long, (i-9-flwd. ; pales 3", barely pointed. H A fine grass. June. 



F. elatlor L. Culm 2 4f, erect; Ivs. lance-linear; pan. diffuse, nodding, com- 

 pound, branches branched, and floriferous above, naked below ; spkl. numerous, 

 3-5-flwd., 23" long ; fls. oblong, 1J", acute ; lower gl. 3-veined. V. Fields. 



T f, nutans Willd. Nodding F. (c, d)-Cu\m slender, 2 4f, about 2-jointed; Ive. 

 linear ; pan. very open, with few long drooping branches floriferous at the end : 

 spkl. 3", lance-ovate (c) 4-6-flwd. ; fls. (d) smooth, nearly veinless. y Hocks, 

 p. palttstrif. Panicle less diffuse, spkl. 3-5-flwd. Between Nos. 6 and 7. 



