FESTUCK.E. 521 



& S. Mant. 2 : 294 (1824). B. virens Trin. Mem. Acad. St. Petersb. 

 <YI.) 1:362 (18:31). B. serotina Duni. Obs. Grain. Belg. 110 

 (1878). B. treiinihi Lam. Fl. Fr. 3:587. 



Perennial; 20-CO cm. liigli. Ligule 1-2 mm. long; blades 

 thin, scabrous, flat, 5-10 cm. long, 2-3 mm. wide, ratlier abruptly 

 pungent-pointed. Panicle ovoid or ])yramidal. open, rays capillary. 

 Spikelets 6 mm. long, 5-9-flowered, green or purplish, half oval; 

 ■empty glumes shorter than the first floral one. 



Vermont, Fringle. 



Sparingly introduced from Europe. 



3. li. MAXIMA L. Sp. PL 70 (1753). Large Quaking-grass. 

 B. nunispessulana Gouau, Ilort. Monsp. 45 (1768). B. ruhens 

 Poir. Suppl. 1:699. B. r^ibra Lam. 111.1:187 (1791). B. 

 f/ra/idis 8alisb. Prod. 21 (1796). B. capoisis Schrauk, Ilort. 

 ]\ronac. /. 43 (1818). B. major Presl, Cyp. et Gram. Sic. 42 

 (1826). 



Annual; 40-60 cm. higli. liigule 3-5 mm. long; bhides flat. 

 Panicle simple, ovoid, 5-10 cm. long, rays single or in twos, cajiil- 

 lary, each bearing 1-3 spikelets. Spikelets nodding, ovate, 10-17 

 mm. long, 8-10-flowered; empty glumes 7-9 mm. long, 11-nerved; 

 floral glume sparingly puberulent on the back, 8 mm. long, con- 

 cave-spherical, 11-nerved; palea oval, 4 nmi, long. 



Massachusetts, Bcal 105 ; Michigan, Clark 2327 ; Colorado, 

 Cassidi/. 



Found in Europe; cultivated for ornament. 



4. B. rotundata (II. B. K.) Steud. Syn. PI. Gram. 284(1855). 

 Bro/jiiis roiuiidalus II. B. K. Nov. Gen. et. Sp. 1:152 (1815). 

 Briza LatnarMana Cham. & Schlecht. Linnaea 6:39 (1831). 



A tufted erect perennial, 60-90 cm. high. Leaves scabrous, 

 ligule 1-2 mm. long; blades 15-30 cm. long, 2-3 mm. wide. 

 Panicle simple^ 8-10 cm. long, ra3's mostly in twos and thi-ees, 

 erect. Spikelets ovoid, sliglitly compressed, 6-8-flowered, 4-15 

 mm. long; empty glumes green, first 3-nerved, second 5-nerved, 

 about 2.5 mm. long; floral glume 3 mm. long, firm, circular, tumid 

 on the back, apex contracted, subacute; palea flat, broadly oval, 

 subacute, 1.7 mm. long. 



