181 



AVENA STRIGOSA. 



ScHREBER. Hooker and Arxott. Smith. Paenell. Koch. Lindlet. 



Wtlldenow. Knapp. Dox. Schradek. Host. Ehrhart. 

 Betz. Withering. Hull. Babington. Macbeight. Kunth. Deakin. 



PLATE ).XI. 



The Bristle- Pointed Oat-Grass. 



Avena — Oat. 



Strigosa — Slender. 



A COMMON species, growing in corn-fields, and differing from 

 Acena fatua and A. safiva in having the florets ending in two 

 long bristles. 



Found in the counties of Notts., York, Durham, Sussex, 

 Cornwall, and Denbigh. In Scotland, in Inverness, Aberdeen, 

 Forfar, and Perthshire. The Island of Anglesca. Central 

 Europe. 



Stem upright, circular, and polished, bearing four or five 

 somewhat broad, acute, glaucous, rough leaves, with smooth 

 striated sheaths, the upper one extending beyond its leaf, and 

 having an oblong membranous ligule at its apex. Joints smooth. 

 Inflorescence simple panicled. Panicle inclined to one side, 

 having rough lengthy lateral branches. Spikelets large and 

 oval, of two awned florets. Calyx of two acute, smooth, mem- 

 branous, somewhat unequal glumes, the basal one smallest 

 and seven-ribbed, the other nine-ribbed. Ribs prominent and 

 green. Florets of two palcai, the exterior one of basal floret 

 of same length as large glume, ending in two rough bristles; 

 six-ribbed and rough. Inner palea linear, membranous, and 



2 G 



