776 ORDER 156. GRAMINE^E. 



slender, 36' long, wholly inclosed in the terminal swelling sheath; glumes une- 

 qual, very white, much shorter than the white, subequal, obtuse pales ; grain oval, 

 4 as long (f ") as the pales. W. N. Y. (Mr. K. S. Brown) and south west ward. 

 After the sheath falls away the mature fls. turn brownish. (Agrost. longif. 

 Torr. ?) 



8 S. Indicus 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, 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, kafy, 

 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 palece, the upper emarginate, rarely mucronate ; palete ovate, obtuse, smooth, 

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



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

 patches, smooth, often viviparous at the nodes; ITO. 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 tho length of tho palese ; palea3 smooth, the lower one shorter ; sta. 3. 

 Long Island (Kneiskera) 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-veinc'd ; palere 

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

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

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



1 C. p6ndula Trin. Culm smooth, 3 5fhigh; Ivs. linear-lanceolate, 12 18' oy 

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

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

 with tltf branches capillary, drooping, and arranged somewhat in 4s; glumes 2 ' 

 long, linear-lanceolate ; lower palece with a short straight awn a little below the 

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

 and Can. 



2 C. arundinacea "Willd. Culm and leaves. as in No. 1. Plant bright green; 

 panicle purple arid green, erect and with ascending or erect branches which are 

 floriferous more than half their length ; glumes 3" long, lanceolate, lower palece. 

 awnless or the aion scarcely equaling the obtuse point. U. 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 Muhlenberg, 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 mucron- 

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

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



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



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



* Glumes pointed, not longer than tho mucronate pale* Nos. 2, 3 



the long-awned paleo; Nos. 4, 5 



BEACIITELYTRCM. Glumes minute, the lower obsolete. Panicle slender Nos. 6, 7 



$ TiuciiooiiLOA. Glumes small, both present. Panicle 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- 



