400 



ORDER 155. GRAMINE^E. 



42. EATONIA, Raf. Spkl. mostly 2-flowered, 

 numerous, paniclecl, silvery. Glumes unlike, the 

 lower linear, 1-veined, the upper broadly obovate, 

 rounded and 3-veined on the back. Pales obtuse, 

 chartaceous, awnless. Grain oblong. u Deli- 

 cate grasses with simple culms. 



1 E. obtusata (Mx.) Panicle narrow, dense, 35' by J ! ; branches short, ap 



pressed ; spkl. (a, b) H" long, 2-flwd.. tumid ; pales (c) scarious at tip, a little longei 

 than the very obtuse upper glume. Dry. Penn. to Wis., and S. June, July. 2f. 



2 E. Pennsylvania (DC.) Panicle 510', slender, open and loose ; spkl. 11" ; 



tipper gl. abruptly short-pointed, or obtuse; upper flower exserted half its length. 

 Shady rocks and meadows. Elegant. Summer. 2f. 



43. MELICA, L. MELIC G. Glumes unequal, ob- 

 tuse, 2-5-flowered. Fls. exserted, the upper incomplete. 

 Fales truncate, veiny as well as the glumes. Grain free. 



y Lvs. flat ; spkl. pedicellate, in a subsimple panicle. e 



M. mii tit a Walt. Culm 3 4f ; Ivs. linear, flat; pan. few-flwd., inclined to one side, 

 spkl. (e) 46" long, with 2 fertile fls., and the third upper one contorted; pales (f\ 

 unequal, veined. Penn. to Wis., and S. 



44. ERAGROSTTS, Beauv. Spkl. 2-oo -flvvd., membranous. Lower 

 pale carinate, 3-veined, never webby at base, upper pale 



persistent on the flexuous racliis after the free grain and 

 lower pale have fallen. Culm simple or branched. 

 Leaves often rolled, bearded at the throat. Panicle with 

 hairy axils. 



Culms branched, prostrate ; spikelets sub-sessile No. 1 



5 Culms branched, ascending ; panicles 13 Nos. 2 7 1 



Culms simple, erect, shorter than its lo> se pan. . .Nos. 811 



1 E. reptans Nees. Culms creeping and rootinir, ti 12' ; Ivs. 



subulate, 12' ; panicles many, small, dense ; spkl. lance-lin- 

 ear ; fls. 1030, very acute. (T) Banks. August. 



2 E. poaeoides Beany, (a) Culms ascending, ]- 2f; Ivs. linear, flat; panicles oblong, 



dense, 2 6', compound ; spkl. (b) ovate-oblong, 3 5", 8-50-flwd., turning white; 

 fls. (c) obtuse, 3-veined; (d, grain). (T) Handsome, but ill-scented. Fields. 



3 E. pllosa L. Culms in tufts, ascending, 4 12'; Ivs. linear, flat, tender; panicles 



oblong, loose ; spkl. linear, bluish, about as long (2 4") as their pedicels; flowers 

 4 12, obtuse, with only the midvein apparent. Dry, sandy places. July. 



4 E. Purshll Schr. Culms ascending, 6 12 20'; Ivs. 13', very narrow; paniclet 



long and loose ; ped. capillary ; spkl. linear-oblong, 2 4" ; fls. 512, acute or acutish, 

 3-veined, purplish. (T) Dry fields. N. J., Penn., and S. Common. July, August. 



5 E. erytlircgoiia Necs. (E. Fraukii Meyer.) Culms in tufts, much branched, 



asci-nding. IS', joints red ; pan. narrow, beardless, 2 4' ; spkl. about 1", their ped 

 much longer ; gls. and pales very acute, obscurely 3-veined. (T) Dry. Pa. to 111,, and S 



6 E. cillariN (L.) Culms decumbent and ascending, 612' ; pan. cylindrical 



branches appressed. covered with the minute (J") ovate spikelets ; fls. 57, mucrc 

 nate, upper pale ciliate-fringed. (T) Waste grounds. South. 



7 E. coiiferta Trin. Culm stout, erect, 2 3f; Ivs. broad-linear; pan. long (5 12'), 



narrow, branches erect, covered with innumerable small (1 If) spikelets ; fls. 7--U 

 hviUine. obtuse. 3-veinud, whitish. River banks, S. Aug., Sept. 



