620 GBAMINE^E. (GRASS FAMILY.) 



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

 lets yellowish, 3- 4-flowered, smooth or rough-hairy, long-awned ; leaves and 

 sheaths smoothish. Dry woods in the upper districts. July. Culms 2 - 

 3 high. Rachis 2-edged. 



75. ARUNDINARIA, Michx. CANE. REED. 



Tall woody grasses, with clustered spreading branches, liroad and flat per- 

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

 unequal, concave, membranaceous, acuminate or awn-pointed. Florets rather 

 loosely imbricated on the bearded and jointed rachis; the glume ovate-lanceo- 

 late, concave, many-nerved, awn-pointed, the palet strongly 2-keeled. Sta- 

 mens 3. Stigmas 3. Grain oblong, free. 



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

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

 nite periods fruiting, and soon after decaying; leaves lanceolate (l'-2' wide), 

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

 spikelets purple, erect ; flowering glume lanceolate-ovate, pubescent, 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 

 North Carolina. Feb. - March. 



