TRIANDRIA— DIGYNIA. Briza. 133 



valves of the corolla, and coated with the outer one, to 

 which it is firmly united. 

 Root annual, or perennial. Stems erect, leafy. Leaves flat. 

 Spikelets loosely panicled, for the most part elegantly 

 pendulous and tremulous; membranous and shining 

 when dry. 



1. B. minor. Small Quaking-grass. 



Spikelets triangular, seven-flowered. Calyx longer than 

 the florets. Stipula lanceolate, elongated. 



B. minor. Linn. Sp. PL 102. Willd. v. 1 . 403. FL Br. 108. Engl. 

 Bot. v. 19. M3 16. FL Grcec. v. 1 . 58. t. 74. Schrad. Germ. v. I. 

 308. Host Gram. v. 2. 22. t. 28. 



B. aspera. Knapp t.6\. 



Gramen tremulum minus, panicula ampla, locustis parvis trian- 

 gulis. Raii Syn. 412. 



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

 f.47. 



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



Near Bath. Mr. Alchorne. Huds. Between Penzance and Mar- 

 ketjew, Cornwall, 1/74. Light/, in his herbarium. Sent from 

 thence by Mr. Penneck, in 1803. 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 stems. Stipula long, acute, decurrent. Pa- 

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

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

 shining. Calyx extending beyond the lowest florets. Outer 

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

 Seed orbicular, depressed, when 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./. 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. Pl.103. mild. v. 1. 404. Fl.Br.109. Engl. 



Bot.v. 5.340. 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 2o. L7./.2. 

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

 Gramen tremulum, Raii Syn. 412. 



