ORDER 155. GRAMINE.E. 



399 



(and gl.) carinate, often bristle-pointed. 2{ Culms tufted, erect, 

 simple, with dense, narrow panicles. 



K. cristata Sm. Culm 20 3^, leafy below; Ivs. flat, erect, pubes- 

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

 about 2-flwd., with an abortive pedicel. (6, a flower.) Mid., W., and N. 

 ft. grdcllis. 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. Stam. 2. n Culm rigidly 

 erect, 15 80'. Lvs. mostly radical, broad-linear. 

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



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

 mostly 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. 57 



Flowers subulate, awned at the tip. Leaves 

 mostly involute. . .(x) 



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



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



1 F. TCytirns L. Culm 5 12' ; Ivs. subulate, 23'; 



glumes minute, equal, 4-6-flwd. ; awn 6", twice longer 

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



2 F. ton Mia Willd. Slender F. (a, b) Culm wiry-filiform, often in tufts, G 12'; Ivs. 



linear-setaceous; pan. simple, narrow, 23'; spkl. 6-9-flwd., 46" long; flowers 

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



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



row, 2 4' ; pan. simple, narrow, 21' ; epkl. ovate, 3-5-flwd. ; fls. lance-oblong, 1$", 

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

 ft. vivipara. Spikelets transformed to leafy tufts. Mountains, N. 



4 F. diiriuscula L. Hard F. Culm erect. 1218'; Ivs. linear, flattish; pan. ob- 



long, spreading, 3 5'; spkl. &-8-flwd., teretish before flowering; fls. lance-subulate, 

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

 ft. rubra. Spikelets 7-9-flwd., fls. pubescent ; the herbage reddish. N. 



5 F. pratensis Hurls. Meadow F. Culm erect, 2 3f; Ivs. lance-linear ; pan. 46' 



.pug, narrow, with short branches ; spkl. few (10 25) and large, teretish before flow- 

 ering, 69" long, 6-9-flwd. ; pales 3", barely pointed, u A fine grass. June. 



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

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

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



7 F. nu tans Willd. Nodding F. (c,d) Culm slender, 2 4f, about 2-jointed; Ive. 

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

 apkl. 3", lance-ovate (c) 4-6-flwd. ; fls. (d) smooth, nearly veinless. ii Rocks. 

 ft. fia.'ir?f He. Panicle less diffuse, spkl. 3-5-flwd. Between Nos. 6 and 7. 



