613 - CLXI. GRAMINE^. K(Elerii. 



about 8' long ; sheaths veined, smooth with obsolete stipules ; panicle branched, 

 spreading, somewhat 1-sided, branches subsolitary; splkelets lance-linear, 7 — 9- 

 flowered, about 8" long; lower glume ^maWer \ loicer paleadLCumindiie. — 71 Intro- 

 duced in fields and meadows. June, July. 



4. F. DURiuscuLA. Hard Fescue Grass. 



St. smooth, 1*2 — 18' high ; Ivs. linear, very acute, a little scabrous ; stipules 

 membranaceous, lacerate ; panicle oblong, spreading, inclining to one side, 

 branches in pairs ; spikelets nearly terete, 5 — 7-flowered ; lovser glume smaller, 

 upper one 3-veined ; palece unequal, lower with short a-^Tis. — % Fields and pas- 

 tures. A fine grass, common. Car. to Can. June, July. 



5. F. NUTANS. Willd. 



St. erect, slender, smooth, with black nodes, about 3f high; Ivs. narrow- 

 linear, a foot long, veined; panicle slender, difi'use, at length nodding, branches 

 in pairs ; spikelets lance-ovate, 3 — 5-flowered ; fis. smooth, awnless and nearly 

 veinless. — % Open woodlands, in most of the States. June. 



6. F. FASCICULARIS. Willd. 



St. much branched from the base, with short internodes, procumbent, 

 geniculate, 12 — 18' long; lis. linear, very long, 5-veined, scabrous, on long, 

 loose sheaths; panicle erect, inclining to one side, with strict, spike-form 

 branches; spikelets appressed, secund, 8 — 10-flowered; glumes l-veineil, lower 

 one very short ; loicer palece tipped with a^^Tis of their own length. — (I) Wet 

 meadows, Mid. States, Aug. 



7. F. oviNA. Slieep's Fescue. 



SI. erect, ascending at base, 6 — 10' high ; Ivs. very narrow, rough, radical 

 ones very numerous, 2-— 4' long, cauline few, short, erect ; panicle few-dowered, 

 simple, contracted ; spikelets ovate, 4-flowered ; palece roundish. — % 1 A valu- 

 able grass, recently introduced. June. 



8. F. xMyurus. 



St. 6 — 12' long, erect, geniculate near the base ; Ivs. 3 — 3' long, subulate, 

 concave ; slip, bifid or retuse ; panicle slender, crowded ; spikelets 4 — 7-flowered ; 

 glumes minute, equal; fis. subulate, hairy; lou-cr palece with an awn twice its 

 length ; sta. 1 ; stig. plumose, white. — Sandy fields, N. J. to Car. 



37. DIARRHENA. Palis. 



Gr. Sis, two, appr]vr}i, rough ; from the two scabrous keels of the upper paleae. 



Panicle racemose or simple ; glumes 2, very unequal, 2 — 5-flow- 

 ered, rigid, acuminate, mucronate ; palea3 cartilaginous, lower cuspi- 

 date, upper much smaller, emarginate ; caryopsis coated, as long as 

 the upper palea : scales ovate, ciliate. 



D. DiANDRA. Wood. (D. Americana. Palis. Festuca diandra. Mr.) 

 St. erect, nearly leafless, slender, rigid, 15 — 30' high ; lis. few, subradical, 

 broadly linear, flat, rough-edged, 10 — iG' by 5 — 7", nearly glabrous ; sheaths 

 close ; slip, obsolete ; panicle very simple and slender, branches erect, few ; spike- 

 lets 2-flowered; glumes broad-ovate, upper twice larger, 5-veined; palece much 

 longer than the glumes, the upper with 2 roughish, green keels, and conspicu- 

 ously mucronate ; sta. 2 '? — River banks, Ohio to 111. !' 



38. KCELERIA. Pers. 



In honor of M. Kwler, a German botanist. 



Spikelets compressed. 2 — 3-flowered; glmues 2, unequal, shorter 

 than the flowers : upper flower pedicellate, with a short, awn-like rudi- 

 ment at the base of the upper palea ; paleae 2, the lower awnless, or 

 awned beneath the tip. 



1. K. cRisTATA. Smith. (K. nitida. Nutt. K. tuberosa. Pers. ?) 



St. 20— 30' high, smooth, leafv to one-half its height, rigidly erect ; Ivs. 



flat, erect, pubescent, 2 — 3' by 1 — 2'',' shorter than their piibescent sheaths ; stip. 



short, lacerate ; panicle spicate, narrow, 3 — 5' long, 6 — 8" diam., branches very 



short ; spikelets 2" long, silvery and shining, compressed, about 2-flowered, with 



