24 TRIANDRIA DIGYNIA. Briza. 



pratensis is not less valuable than the trivialia. It is earlier in leaf, 

 and will thrive with less moisture, though the latter produces, at 

 last, a better crop. Sm. 



P. annua. Annual M. Panicle spreading at right 



angles. Spikelets egg-shaped, about five-flowered. 



Florets a little remote, five-ribbed, without a web. 



Culms oblique, compressed. E. B. 1141. C. 1. 6. 



Gramen minimum album. G. E. 3. 

 Meadows, pastures, waste and cultivated ground, almost every where. 

 An. April, November. 



A good grass for fodder, abundant in proportion to the richness 

 of the soil, easily raised, but not durable. Not damaged, but 

 rather improved, by being trodden upon. Sm. 



P. nemoralis. IVood M. Panicle spreading, slender, 

 very lax. Calyx-glumes spear-shaped, taper-pointed, 

 each three-ribbed. Spikelets spear-shaped. Florets 

 about three, five-ribbed, acute ; silky at the keel and 

 side ribs ; hairy at the base, without a web. Stipulas 

 very short, notched. E. B. 1265. 



Groves, woods. 



Per. June. 



Culms erect, slender. Spikelets small. Fi. diffuse. In Switzer- 

 land P. nemoralis often bears on the steins, rigid, bristly tufts like 

 rootlets, analogous to the mossy balls of the dog-rose, and like 

 them probably the effect of the puncture of some insect. Sm. 



TRIO'DIA.' Heath-grass. 



T. decumhens. Decumbent H. Panicle nearly simple, 



close, erect. Florets four ; their middle tooth shortest. 



Calyx smooth. Stipula hairy. Culm lying down. 



Poa decumbens. E. B. 79 2. Festuca decumbens. Sb. 



46. 

 Dry pastures, heaths. Shotover Hill, Southleigh Heath. Sb. 



Bogs under Bullingdon Green, (Bagley Wood.) Bx. 

 Per. Jidy. 

 Calyx-glumes (about) as long as the spikelet. Linn. Fl. Suec. 



Ls. stiff, rolled inwards. Spikelet swelling. 



BRIZA. Quaking-grass. 

 B. media. Common Q. Spikelets egg-shaped, about 



' Gr. three-toothed. 



