o7. CKAMIXE.E. 



17 



Cultivated and waste places. 

 May-Dec. Common Aveed in 

 all wlieat-growing countries. 



•2. A. barbata, Brotero. 

 Braid I'll Out. Differs from 

 the preceding in having a 1- 

 sided panicle ; outer glumes 

 rather unequal ; flower.s all 

 awned : flowering glume Avith 

 long white hairs and ending 

 in 2 long scarious bristles, so 

 that the flower is at least as 

 long as the loAyer empty 

 glume. 



Eoadsidos and pa.sture. — 

 Sept. - Nov. — Mediterranean 

 region. 



3. A. sativa, L. Culti- 

 ratcd (hit. Differs from the 

 2 preceding species in the 

 glabrous fUjwering glume, 

 which is shortly 2-toothed at 

 top, the lower flower usually 



Avith a dorsal a\An twice as long as the spikelet. the upper 

 floAAcr aAA-ned or aAvnless ; axis of spikelet glabrous, or hairy 

 below the loAver floAA^er. 



Cultivated for horse-feed and spontaneous in places. — 

 Sept. -Nov. — Origin unknoAvn, but not far removed from 

 .1. fat nil. 



26. AiRA, L. 



small, compressed laterally, 2-flowered ; 

 equal, persistant, membranous, keeled, 



Avena fatua. 



Spikelets very 

 outer glumes 2. 

 1-nerved ; flowering glume aAvned or not; grain glabrous. 



Panicle narrowed at base; outer glumes 



longer than the awned flowers .1. cnnjophiiUca 1 



Panicle spreading; outer glume.s shorter 



tlian the awnless floAvers 1. miinita 2 



1. Aira caryophyllea, L. Silmy Ilair-gi a. ■<.<>, 

 Slender, erect, glabrous grass; leaves rather short, narrow- 

 linear, ini'olled ; ligule lanceolate: panicle loose, Avith long, 

 fllif(u-m, spreading-erect branches; spikelets oblong-urn- 

 .shaped ; floAvers AAitli short tufts of hair at base, both or 

 only the upper one aAAued-; outer glumes concave, acute, 

 Avhite, shining, longer than the flowers, flowering glume 

 acuminate, bifid, AAith a bent aAAU springing from it.s base 

 and (luite half as long again as tli(> spikelet. 



Pasture, Adelaide plains. — Sept. -Nov. — Europe; Ave.s- 

 tern Asia. 



