GRAMINE^. (gKASS FAMILY.) oGl 



panicle. Rachis jointed. Glumes membranaceous, obtuse, persistent PalcjB 

 nearly equal, somcwiiat chartaccous, obtuse, early falling away with the sejiarat- 

 inj^ joints of the rachis; the lower one naked, convex, 7-ncrved. Stamens 2-3. 

 Grain free, oblong. 



1- G. nervata, Trin. Culms erect; panicle diffuse, the capillary bnincbos 

 at length drooping; spikelcts purplish, very numerous, ovate-oblong, 5-G-llo\v- 

 ered, nearly terete ; lower palea oblong, obtuse, 7-nerved. (Poa parviflora, Pmnli.) 

 — Wet swamps. West Florida, and nortiiward July. — Culms 2° -3° high. 

 Spikelets 2" long. 



2. G. pallida, Trin. Culms erect, or ascending; panicle narrow, nearly 

 simple, with the capillary branches erect; spikelcts pale, oltlong-lincar, 5-9-How- 

 ered, nearly terete ; lower palea oblong, minutely 5-toothcd, 7-ncrved. — Shallow 

 water. North Carolina, and northward. July. — Culms 1° -3° long. Spikelets 

 k' long- 



3. G. fluitans, R Brown. Culms thick, ascending from a creeping base; 

 leaves long, l)roa<lly linear; panicle long, narrow, racemose; spikelets linear, te- 

 rete, pale, loosely 7 - 13-flowercd (1' long); lower palea obtuse, or slightly 3- 

 lobed at the scarious apex, roughish. 7-nerved. (Poa fluitans. Ell.) — Shallow 

 water in the ui)per districts, and northward. June and July. — Culms l°-5*' 

 long. Panicle 1° long. 



4. G. rigida, Smith. Culms low (2'-4'high), ascending, rigid; leaves 

 subulate, 2'"!? 'onfT. involute and rigid when dry; panicle 1'- li' long, lance- 

 olate, dense, 1-sided; spikelets linear, acute, .5 -11 -flowered, short-])edicelled ; 

 glumes serrulate on the keel; paleic obtuse, emarginato or inucronalc. (Poa 

 rigida, L.) — Dry soils, around Beaufort, South Carolina, Elliott. April and 

 May. 



29. ARUNDTNARIA, Michx. Cane or IIked. 



Tall woody grasses, with clustered spreading branches, broad and flat persist- 

 ent leaves, and racemose or panicled many-flowered spikelets. Glumes unefjual, 

 concave, membranaceous, awn-pointed. Palea; rather loosely imbricated on the 

 bearckd and jointed rachis, nearly equal ; the lowest one ovate-lanceolate, con- 

 cave, many-nerved, awn-pointed ; the upper strongly 2-keeled. Stamens 3. 

 Stigmas 3. Grain oblong, free. 



1. A. gigantea. (Cane.) Culms arborescent, 10° -20° high, rigid, sim- 

 ple the first year, branching the second, afterwards at indefinite periods fruiting, 

 and soon Jffter decaying; leaves lanceolate (l'-2' wide), acuminate, srnoothish ; 

 panicles lateral, com])Osed of few simple racemes; spikelets purple, erect; lower 

 palea lanceolate-ovate, pubescent, fringed (8" long), awn-pointed ( Arundinaria 

 maerosperma, Michx.) — Banks of the larger rivers, Florida to North Carolina. 

 February. 



2. A. tecta, Muhl. (Reed.) Culms slender, 2°- 10° hJL'h, branching ; leaves 

 linear-lanceolate, acuminate, rongliish, the sheaths bearded at the thioat; spike- 

 lets solitary, or in a simple raceme at the summit of the branches, or frequently 



