ORDER 156. GRAMINE^E. 



slender, 36' long, wholly inclosed in tho termini swelling sheath; glumes une- 

 qual, very white, much shorter Hum tho white, subequal, obtuse pales; grain oval, 

 * as long (f") as the pales. W. N. Y. (Mr. E. S. Brown) and south westward. 

 After tho" sheath falls away the mature tls. turn brownish. (Agrost. longif. 

 Torr. ?) 



'8 S. I&dicus Brown. Culm erect, terete, glabrous, 2 3f high; Ivs. involute, 

 tapering to filiform; sheath beardless at throat; joints blackish; panicle long (If), 

 slender, open, composed of short, erect, alternate spike-like racemes / glumes 2 T un- 

 equal, much shorter than the subequal pales; grain dark resin-colored, oblong, 

 as long as pales. Pastures and waste grounds, S. States. (A. Indica L.) "W. 

 Indies. 



9 S. compressus Torr. Glabrous; culm erect, much compressed, simple, leafy, 

 branched at base, 1 2f high ; Ivs. narrowly linear, scarcely shorter than tho 

 stem ; keel prolonged into the open sheath ; stip. very short ; panicle purple, sub- 

 simple, contracted, the branches few and erect ; glumes equal, acute, shorter than 

 the paleas, the upper emarginate, rarely mucronate ; palese ovate, obtuse, smooth, 

 sometimes deeply cleft ; stig. purple. Sandy swamps, N. J. Sept. 



10 S. serotinus Torr. Culm 12 18' high, filiform, compressed, growing in 

 patches, smooth, often viviparous at tho nodes; Ivs. 2 3' by -", keeled, smooth; 

 sheaths open; stip. ovate, short; panicle 3 10' long, capillary, diffuse, branches 

 flexuous, alternate; spikelets elliptical, scarcely ^" long; glume ovate, 1 -veined, 

 unequal, half the length of the palese ; palese smooth, the lower one shorter ; sta. 3. 

 Long Island (Kneiskern) to Me. and Mich. July. (Vilfa, Torr. Poa modesta 

 Tuckm.) 



6. CIN'NA, L. SWEET REED GRASS. Spikelets 1 -flowered, com- 

 pressed ; glumes 2, subequal, without awns, upper one 3-veined ; palese 

 2, naked at base, on short stipes, lower one larger, enclosing the upper, 

 with a short aw a a little below the tip ; stamen 1 ; grain oblong, free. 

 11 Erect, simple, tall, with a large panicle. 



1 C. pendula Trin. Culm smooth, 3 Gfhigh; Ivs. linear-lanceolate, 12 18' by 

 3 5", pale green, rough-edged, with smooth, striate sheaths ; stip. long, lacerated; 

 panicle white-green, near a foot in length, rather attenuated above and nodding, 

 with the branches capillary, drooping, and arranged somewhat in 4s; glumes 2" 

 long, linear-lanceolate ; lower palcce. with a short straight awn a little below tli3 

 tip. 2 A beautiful grass, sought by cattle, in rich, shady soils, N. States 

 and Can. 



2 C. artmdiiiacea Willd. Culm and leaves as in Iso. 1. Plant bright green ; 

 panicle purple and green, erect and with ascending or erect branches which aro 

 lloriferous more than half their length ; glumes 3" long, lanceolate, lower palecs 

 awnless or the awn scarcely equaling the obtuse point. TJ. S., in shady woods, 

 chiefly southward, A finer looking grass than the preceding. Jl., Aug. 



7. MUHLENBER'GIA, Schreber. DROP-SEED GRASS. (In honor of 

 Henry Muhlenbery, D.D., an eminent American botanist.) Spikelets 

 1 -flowered, fl. sessile in the glumes and mostly bearded at the base ; 

 glumes 2, unequal, shorter than the pales, acute or awned, sometimes 

 minute, the lower rarely obsolete ; pales 2, the lower awned or mueron- 



.ate at apex, upper 2-keeled ; stam. 3 2 ; stig. 2, plumous; caryopsis 

 free. Culms often branched. Panicles simple, mostly contracted. 



McHLteNBERGiA. Glumes manifest. Panicles slender, terminal and lateral. (*) 



* Glumes awned and twice longer than the awnless pale* No. 1 



* Glumes pointed, not longer than the mucronate paleaj Nos. 2, 3 



the long-awned pale* Nos. 4, 5 



i BRACHYELYTRUM. Glumes minute, the lower obsolete. Panicle slender Nos. 6, 1 



\ TIUCUOCIILOA. Glumes email, both present. Panicio diffuse, capillary No. 8 



1 M. .glomerata Trin. Glaucous; culm compressed, erect, smooth, with ap- 

 pressed branches or subsimple, 1-J 4f.high; Ivs. somewhat 2-rowed, erect, flat, 

 rough, 3 5' long, with closed sheaths ; panicle spicate, dense, conglomerated, in- 



