612 CLXI. GRAMINEiE. Kceleru. 



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

 spreading, somewhat ] -sided, branches subsolitary; spikclets lance-linear, 7 — 9- 

 flowered, about 8" long ; lower glume smaller ; lower palea acuminate. — % Intro- 

 duced in fields and meadows. June, July. 



4. F. DURiuscuLA. Hard Fescue Grass. 



St. smooth, 12 — 18' high ; Ivs. linear, very acute, a little scabrous ; stipules 

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

 branches in pairs ; spikclets nearly terete, 5 — 7-flowered ; lower glume smaller, 

 •upper one 3-veined ; palca unequal, lower with short awns. — % 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, diffuse, at length nodding, branches 

 in pairs ; spikelets lance-ovate, 3 — 5-flowered ; fls. 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 — IS' long; Ivs. 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 1-veined, lower 

 one very short ; lower palca. tipped with awns of their own length. — Wet 

 meadows, Mid. States. Atig. 



7. F. ovlNA. Sheep's Fescue. 



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

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

 simple, contracted ; spikelets ovate, 4-flowered ; palea roundish. — Tj. "? A valu- 

 able grass, recently introduced. June. 



8. F. Myurus. 



St. 6 — 12' long, erect, geniculate near the base ; Ivs. 2 — 3' long, subulate, 

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

 o-Zwj^fs minute, equal ; ;^s. subulate, hairy; lower palece with an awn twice its 

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



37. DIARRHENA. Palis. 



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



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

 ered, rigid, acuminate, mucrouate ; palete 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. Mx.) 

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

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

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

 lets 2-flovvered ; glmnes 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. 27— River banks, Ohio to 111. ! 



38. KCELERIA. Pers. 



In honor of M. Kifler, a German botanist. 



Spikelets compressed, 2 — 3-flowered; glumes 2, unequal, shorter 

 than the flowers ; upper flower pedicellate, with a short, awn-like rudi- 's 

 meut 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, 3—3' by 1—2"," shorter than their pubescent sheaths ; slip. 



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 



