422 gkaminej:. 



Glumes keeled. Pale.*: of the perfect flowers 2 ; lower 

 one boat-shaped; upper smaller, doubly keeled. Stamens 

 mostly 1. — Upright pcrcnniils, in -tufts from creeping root- 

 stocJcs, with broad leaves and large spikelets in a panicle. 



U. LATIFOLIA, Michx. Broad-leaved Spike-grass. 



Spikelets on slender pedicels, drooping in an ample loo?e panicle, oblong-ovate, 

 10 to 15-floworcd; Jlcioers nearly apprcssed, ovate lanceolate and acuminate, some- 

 what falc&te ; stamai 1. 



Mountains and shaded banks. Aug. Culm 3 to 4 feet high, somewhat branch- 

 ing. Leaves flat, nearly 1 inch wide, Panicle 1 foot long, loose . Spikelets 1 inch 

 long and y z inch wide. 



29. PHRAGMITE3, Trin. Reed. 



Qv.pkragitvU.es, growing in, or forming hedges. 



Spikelets 3 to 7-flowcrcd ; flowers surrounded by a 

 tuft of hairs, all 3-androus and perfect, except the lowest, 

 which is either neutral or with a single stamen, and naked. 

 Glumes 2, lanceolate, unequal. Paleje very unequal ; the 

 lowest one elongated, acuminate ', the upper 2-keeled. 

 Styles long. — Tall and stoat peremiiah } with numeroiu 

 broad leaves, and a large terminal panicle. 



P. communis, Trin. Common Reed Grass. 



Panicle loose, diffuse when old ; sjrihrfcts 3 to Deflowered, ( Aruudo Phragmltes, L$ 

 Edges of ponds and swamps. Aug., Sept. Culm 9 to 1 . feet high, very leafy, 



with numerous joints. Leaves 1 to 2 feet long, linear-lanceolate, Hat, glaucous. 



Panicle very large, loose. The largest grass in the Northern States; resembling 



Broom-corn at a distance 



30. TRITICUM, Linn. Wheat. 



The classical name. 



Spikelets 3 to many-flowered, single at eacli joint, and 

 placed with the side against the rachis. Glumes transverse, 

 nearly equal and opposite, herbaceous, nerved. Pale^e 

 lanceolate ; the lower one concave, acuminate or awned at 

 the summit; the upper one flattened, bristly-ciliate on the 

 nerves, free or adherent to the grooves of the grain. Sta- 

 mens 3. — Flowers spiked. 



Seo. i. AaaoPYECM, G«rt. Perennials. Spikes 2-rankcd; glumes acute fit 

 pointed. 



1. T. REPENS, L. Couch-grass. Quitch-grass, 



Rootstocks creeping extensively; spikelets 4 to 8-flowcred; glwnss 6 to 7-nerred; 

 rachis rough on the angle * ; awn none, or very short. 



Fields and meadows, naturalised and troublesome. June— Aug. Ctum 1 to 9 

 feet hi£h, LmviS flat, rou^hisk or hairy above, lanoe-liuear. $pi*x 3 to 6 Lncbeg 



