ORDER 155. GRAMINPLE. 



599 



(and gl.) carinatc, often bristle-pointed, li Culms tufted, erect, 

 simple, with dense, narrow panicles. 



K. cristata Sm. Culm 2030', leafy below; Ivs. flat, erect, pubes- 

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

 about 2-flwd., Avith an abortive pedicel. (5, a flower.) Mid., W., and N. 

 |3. gracills. 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. (tf) Pales (e) cartilaginous, lower cuspidate, 

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

 loose in its pericarp. tStam. 2. 2 Culm rigidly 

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

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



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

 mostly carinate. Pales firm, the lower rounded 



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

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

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

 cemed, the Ms. 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., .(.r) 



:r Awn much shorter than the flower. U No*. 3, 4 



x Awn as long as the 11. or irmch longer. (T)..Nos. 1, 2 



1 F. rayuriiM L. Culm 5-1-2'; Ivs. subulate, 23'; 



glumes minute, equal, 4-tj-flwd. ; awn 0", twice longer 

 than the pale : panicle slender. M.. S. 



2 F. teiiella Wi.ld. Slender F. (a, b) Culm wiry-filiform, often in tufts, G 12' ; Ivs. 



linear-M-'taceous ; pan. simple, narrow, 23'; spkl. G-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, 24' ; pan. simple, narrow, 21' ; spkl. ovate, 3-5-flwd. ; fls. lance-oblong, 1J", 

 the awn $\ as long. 2; Pastures and fields. A valuable grass. June. Europe. 

 ^. vSvipara. Spikelets transformed to leafy tufts. Mountains, N. 



4 F. diiriuscula 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, 

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

 /3. rubra. Spikelets 7-9-flwd., fls. pubescent; the herbage reddish. N. 



5 F. prate lists Huds. Meadow F. Culm erect, 231'; Ivs. lance-linear ; pan. 4 fi' 



.ong. narrow, with short branches ; spkl. few (102.5) and large, tereti*h before flow 

 :.'iug, G 9" long, f!-9-flwcl. ; pales 3", barely pointed, li A tine grass. June. 



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

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

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



? F. n u tans Willd. Nodding F. (c, d) Culm slender, 2 4f, about 2-jointed ; IVB. 

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

 spkl. :5", lance-ovate (c) 4-fi-flwd. ; fls. (d) smooth, nearly veinless. n Hocks. 

 ft. pa^ti.ttrif. ranicle less diffuse, spkl. 2-5-fl\vd. Between Nos. 6 aud 7. 



