457 
leaves flat, broad; stamens one. Perennial; flowers in August. Culm3 3 to 4 
feet high. Illinois and Ohio. 
GENUS 32. PHRAGMITES. Trinius, 
(Gebek —Phragmos growing in or forming hedges.) 
Spikelets three to seven-flowered; flowers rather distant; rachis silky-beard¬ 
ed; glumes membranaceous, shorter than the flowers, lanceolate, keeled, sharp- 
pointed, very unequal; paleae membranaceous,slender, the lower narrowly awl- 
shaped, thriee the length of the upper; styles long; grain free. 
87. Phragmites Communis. Trinius. 
Syn.—A rundo phragmites, Linn. Reed. 
Panicle loose, diffuse when old; spikelets three to five-flowered. A tall 
stout grass, with numerous broad leaves and a large terminal panicle. Pe¬ 
rennial ; flowers in August and September. Culms 6 to 12 feet high. Grows in 
shallow ponds and swamps. Wisconsin, Illinois, Northern Indiana, Michigan, 
Ohio and Minnesota. A very large and showy grass, but has not yet been 
found to possess any essential value to man. 
GENUS. 33. ARUNDINARIA. Richards . 
fFrom the Latin, Arundo , a reedj 
Spikelets many-flowered, somewhat compressed; florets distant, perfect or 
staminate only; glumes concave, awnless, small, lower smaller than the upper; 
paleae herbaceous, lower one ovate, concave, sharply mucronate, many-nerved 
the upper one two-keeled. Scales three longer than the ovary, which is sessile 
and glabrous; stamens three; styles three, very short; stigmas plumose, the hairs 
long, simple, or sparingly branched; caryopsis free, ovoid-oblong, somewhat 
curved terete; culms woody. 
88, Arundinaria Macrosperma. Michaux. 
Syn. —Miegia gigantea, Nutt.. Cane. 
Leaves linear-lanceolate, green on both sides, smoothish; panicle terminal, 
sub-racemose, simple; spikelets seven to ten-flowered, purple, smooth, acumin¬ 
ate. Perennial; flowers in March and April. Culms 30 to 40 feet high; an 
arborescent grass. Southern Illinois and Indiana, extending up the Ohio 
river to the Falls at New Albany. Extensively used for fishing rods. 
TRIBE YU. IIORDINA^E. 
Spikelets several (rarely one ) flowered, sessile, on opposite sides of a zigzag, 
