776 Order 156.— GKAMINEiB. 



slender, 3—6' long, wholly inclosed in the terminal swelling sheath; glumes une- 

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

 J as long (!") as the poles. — W. N. Y. (Mr. R. S. Brown) and southwestward. 

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

 Torr. ?) 



8 S. Indicus Brown. Culm erect, terete r glabrous, 2— 3f high; lvs. 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, leafy, 

 branched at base, 1 — 2f high ; lvs. narrowly linear, scarcely shorter than the 

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

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



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

 patches, smooth, often viviparous at the nodes; lvs. 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 ; paleae smooth, the lower one shorter ; sta. 3. 

 — Long Island (Kneiskern) to Me. and Mich. July. (Vilfa, Torr. Poa modosu» 

 Tuckm.) 



6. CIN'NA, L. Sweet Reed Grass. Spikelets I-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 awn a little below the tip ; stamen 1 ; grain oblong, free 

 — If. Erect, simple, tall, with a large panicle. 



1 C. pendula Trin. Culm smooth, 3 — 5fhigh; lvs. linear-lanceolate, 12 — 18' t>y 

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

 long, linear-lanceolate ; lower paleoz with a short straight awn a little below tho- 

 tip. — U 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 and green, erect and with ascending or erect branches which are 

 noriferous more than half their length ; glumes 3" long, lanceolate, lower palear 

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

 chiefly southward. A liner 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 

 I-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 ; stam. 3 — 2 ; stig. 2, plumous; caryopsis 

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



§ Mdhlenbf.kgia. Glumes manifest. Panicles slender, terminal and lateral. (*) 



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



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



— the long-awned palete Nos. 4, 5 



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



| Tricuochloa. Glumes small, both present. Panicle diffuse, capillary No. S 



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

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

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



