G20 GUAMIXE.E. (r.KASS FAMILY.) 



1. A. Hystrix, Willd. Spike oreit, 3' -6' long, lax-flowered; spike- 

 lets yi'llowi-sli, .i -4-lio\voreil, smooth or rougli-iiairy, loiig-awneii ; leaves and 

 shcntlis sniuotliisli. — Dry woods in tlie npj)cr districts. July. — Culms 2'^- 

 3° high. Hathis 2cdgcd. 



75. ARUNDINARIA, Michx. Cane. Reed. 



Tall woody grasses, with clustered s])reading branches, broad and flat per- 

 sistent leaves, and racemose or jjauicled many-flowered spikelets. Glumes 

 une<iual, concave, membranaceous, acuminate or awn-pointed. Florets rather 

 loosely imbricated on tlie bearded and jointed racliis ; the glume ovate-lancecj- 

 late, concave, mauy-uerved, awn-pointed, the palet strongly 2-keeled. ISta- 

 mens 3. Stigmas 3. Grain obloug, free. 



1. A. macrosperma, Michx. (Cane.) Culms arborescent, 10°- 20° 

 high, rigid, simple the first year, branching the second, afterwarfls at indefi- 

 nite j)eriods fruiting, and soon after decaying; leaves lanceolate {\'-2' wide), 

 acuminate, smoothish ; panicles lateral, composed of few simple racemes ; 

 spikelets purple, erect ; flowering glume lanceolate-ovate, pul)escent, fringed 

 (8" long), awn-pointed. — Banks of the larger rivers, Florida to North Caro- 

 lina. Feb. 



2. A. tecta, Muhl. (Reed.) Culms slender, 2° -10° high, branching ; 

 leaves linear-lanceolate, acuminate, roughish, the sheaths bearded at the 

 throat ; spikelets solitary, or in a simple raceme at the summit of the 

 branches, or frequently on leafless radical culms; flowering glume (6" long) 

 ovate-lanceolate, smooth, fringed on the margins. — Swamps, Florida to 

 Nortii Carolina. Feb. - March. 



