72 



THE GENERA AND THEIR SPECIES. 



twisted, upper half straight and club-shaped ; inner palea shorter 

 than outer, thin, cleft at apex. Anthers short and dark purple. 



39. A . pvcecox. Sandy and hilly pastures of Europe and 

 Western Asia. May and June. Root annual, fibres filiform. 

 Stem erect, frequently geniculate below, tumid at nodes, angular 

 above. Radical leaves none, stem leaves bristle-shaped, short, 

 nearly erect, pale green. Sheaths angular, smooth, tumid, 

 ribbed, uppermost longer than leaf ; ligule large, lanceolate, sheath- 

 ing, torn or notched. Panicle spike-like, erect, narrow, branches 

 angular, short and waved. Spikelets few, crowded, ovate, 

 glabrous, hairy at base, florets two, silvery grey. Glumes equal, 

 ovate, embracing paleae, compressed, not rounded at base, awnless. 

 Outer palea lanceolate, concave, awned on back near base, awn 

 twice as long as palea, twisted and slightly kneed ; inner palea 

 shorter than outer, margins inflexed, apex bifid. 



40. A. caryophyllea. Sandy pastures and heaths, Europe and 

 Western Asia. June and July. Root annual, small and fibrous. 

 Stem erect, smooth, slender, leafy, ribbed ; nodes smooth. Radical 

 leaves none ; stem leaves few, bristle-shaped, involute channelled, 



pale green. Sheath angular, 

 striated, rough upwards ; ligule 

 prominent, long and pointed. 

 Panicle loose and spreading, branch- 

 ing in threes, rather wavy, pur- 

 plish. Spikelets crowded, small, 

 tumid, rounded at base ; florets 

 two, hairy at base, purple, green, 

 and white. Glumes equal, longer 

 than florets, embracing paleae, 

 lanceolate, ribbed, jagged at apex, 

 keel toothed. Outer palea smaller 

 than glumes, acute, toothed at 

 apex, hairy at base, ribless, 

 awned ; awn jointed, long, and rough, rising from below middle 

 and protruding beyond glumes ; inner palea almost as long 

 as outer, flat, toothed at apex. 



Air a caryophyllea. 

 Spikelet. For Floret see p. 



