TRIANDRIA— DIGYNIA. Briza. 133 



B. aspera. Knapp t.6l. 



Gramen tremulum minus, panicula ampla, locustis parvis trian- 

 gulis. Rail Syn. 412. 



G. tremulum minus, locusta deltoide. Moris, v. 3. 203. sect. 8. t 6. 

 /. 47. 



In cultivated fields in the south of England, very rare. 



Near Bath. Mr. Alchorne. Hiids. Between Pensance and Mar- 

 ketjew, Cornwall, 1774. Light/, in his herbarium. Sent from 

 thence by Mr. Penneck, in 1 803, Mr. Sowerby. In Jersey, 

 Sherard. In Guernsey. Yalden. 



Annual. July. 



Root fibrous, small, downy. Whole plant of a light bright green, 

 smooth, except the edges of the leaves ; a span or more in height, 

 with one or more steins. Stipula long, acute, decurrent. Pa- 

 nicle spreading, with numerous, fine, capillary, rigid, zigzag 

 branches. Spikelets grten and white, often with a purple tint, 

 shining. Calyx extending beyond the loweat Jlorets. Outer 

 valve of the corolla gibbous at the base j inner acutely cloven. 

 Seed orbicular, depressed, vv'hen ripe firmly attached to the outer 

 valve of the corolla. 



Poa n. 1449. Hall. Hist. v. 2. 218. Gramen tremulum minus pani- 

 cula parva. Bauh. Prodr. 4./. Moris, f. 46, appears, by Haller's 

 account, a mere variety of the following. 



2. B. media. Common Quaking-grass. 



Spikelets ovate, about seven-flowered. Calyx shorter than 

 the florets. Stipula very short and blunt. 



B. media. Linn. Sp. P/. 103. Willd. v. I. 404. Fl.Br.]09. Engl. 



Bot.v. 5. S40. Mart. Rust. t. 39. Knapp t. 60. Hook. Scot. 37. 



Schrad. Germ. v. 1. 309. Host Gram. v. 2, 22. t. 29. Fl. Dan. 



t.258. Leers 25. t. 7. f. 2. 

 Poa n. 1448. Hall. Hist. v. 2. 218. 

 Gramen tremulum. Rati Syn. 412. 

 G. tremulum majus. Bauh. Theatr. 22. f. Scheuchz. j4gr. 204. t. 4. 



G. tremulum vulgare minus, locustis rotundioribus. Moris, v. 3. 

 203. sect. 8. t.6.f.45. 



In pastures common. 



Perennial. May, June. 



Root fibrous, tufted. Stem 12 or 18 inches high, leafy at the bot- 

 tom chiefly, smooth ; straight and slender in the upper part. 

 Leaves deep green. Panicle very slender and tremulous, the 

 branches and spikelets tinged with purplish brown. Florets about 

 7, the lower ones projecting a little beyond the calyx, which ren- 

 ders the spikelet ovate. I have from Mr. J. E. Bowman a beau- 

 tiful Welch specimen, whose ^fore^s are 12 or more, green and 

 %vhite, with 3 ribs towards each margin, more conspicuous than 



