551 
about equaling the lower florets, caducous; floral glumes coriaceous, 
5-nerved near the apex, terminating in stout hispid awns; palet equal- 
ing the glumes: grain linear-oblong flat.—Rather coarse grass, with a 
dark bottle-green color, rough or hispid throughout. (Asprella Willd.) 
1. H. hystrix (L.) MacMillan. (BoTrLe Brusn.) Culms about 1m. high: leaves 
2 to5 dm. long, lanceolate: spike loose, 1 to 2dm. long: spikelets divergent; floral 
glumes tipped with awns two or three times their own length. (Hlymus hystrix L. 
Asprella hystric Willd.)—Moist woods, central Texas and northward. 
76. ARUNDINARIA Michx. 
Spikelets 5 to 15-flowered, compressed, awnless, usually solitary at 
the nodes of the elongated cylindrical jointed rachis, the loose few- 
flowered spikes thus formed fasciculate in irregular panicles: empty 
glumes small acute; floral glume herbaceous, about 9-nerved, acute or 
bristle pointed, equaled by the palet: grain spindle-shaped, with a 
shallow channel, opaque, free: blade of leaf narrowed to a short petiole- 
like base, articulate with the sheath. 
1, A. macrosperma Michx. (CANE.) Culms arborescent, 3 to 10 m. high, simple 
or branching: panicles lateral: spikelets 3 to 5 em. long.—River banks, forming 
cane-brakes, central Texas to Virginia. 
2. A. tecta (Walt.) Muhl. (Swircu CANE.) Culms slender, 1 to 3 dm. high: 
spikelets solitary or in simple terminal racemes, long peduncled. (Arundo tecta 
Walt. 4. macrosperma, var. fruticosa Munro.)—Swamps or wet land, often in water, 
central Texas to Illinois and Florida, 
