HORTUS GRAMINEUS WOBURNENSTS. 207 



production of the superior grasses, the common quaking-grass 

 will be found of value. 



It flowers in the second and third weeks of June, and the seed 

 is ripe about the second week of July. 



BROMUS iiiermis. Smooth awnless Brome-grass. 



Specific character : Panicle upright ; spikelets linear, cylindric, 

 naked, awnless, or with very short awns sometimes, imbri- 

 cated; leaves smooth. Flo. Ger. Hort. Gram. Wob. Fol. 95. 



Obs. — Root powerfully creeping, like common couch-grass; 

 culms from a foot to two feet high, erect, scored, smooth. 

 Leaves broad, acuminate, smooth, dark green, mid-rib 

 whitish, and rough. Panicle from six inches to a foot and 

 more, in length ; at first contracted and upright, afterwards 

 nodding. Flo. Ger. 359 ; Host. t. 9 ; Hort. Kew. 



Native of Germany. Root creeping. Perennial. Germ. Gr«/i- 

 nenhse Trespe. 



Experiments. — At the time of flowering, the produce from a 

 black siliceous sandy loam is — 



dr. qr. 



Grass, 18 oz. The produce per acre - 

 80 dr. of grass weigh, when dry - 40 ^ 



The produce of the space, ditto - 144 ^ 



The weight lost by the produce of one acre in drying 6125 10 

 64 dr. of grass aftbrd of nutritive matter 108 gr. ^ 

 The produce of the space, ditto - 486| S 



At the time the seed is ripe, the produce is — 



dr. qr. 



Grass, 18 oz. The produce per acre 



80 dr. of grass weigh, when dry 35 



The produce of the space, ditto 126 



The weight lost by the produce of one acre in drying 6891 



64 dr. of grass afford of nutritive matter 4 1^ 



The produce of the space, ditto 19 0}^ 



The produce of latter-math is — 

 Grass, 13 oz. The produce per acre 

 64 dr. of grass afford of nutritive matter 11^ 

 The produce of the space, ditto 4 0| j 



In Germany, where this grass is a native, it grows in moist 

 pastures, orchards, and by the banks of rivers. Its root is 

 powerfully creeping, like the common couch-grass, and possesses 



