154 CLASSIFICATION OF [CH. 



© © Awn bent and tvristed, basal or nearly so ; 

 glumes very hairy. 



A Olumes golden brown: one awn straight, 

 one "kneed." 



Anthoxanthum odoratum. 



The grass whioh gives the scent to new-mown hay. The " seed " 

 is often impure, containing a continental species A. Puelii and other 

 hairy forms. 



Fig. 67. Anthoxanthum odoratum. a, "seed" and oaryopsis, nat. size; 

 b, the " seed," and c, oaryopsis, x about 7. The " seed " consists 

 of the inner hairy glumes, each with a dorsal awn — one kneed — 

 enclosing the palese and caryopsis. The outer pair of unawned 

 glumes has been removed. Nobbe. 



Anthoxanthum odoratum, L. (Fig. 67). 



The one-flowered spikelet has four hairy glumes, the 

 outer pair of which are unequal and awnless : the " seed " 

 consists of the inner pair of golden-brown hairy and 

 dorsally awned glumes, covering the thin, membranous, 

 shining, smooth, blunt palese and the caryopsis, to which 

 the inner palea adheres. Total length, without awns, 

 about 3 — 4 mm. Palea 1'6 mm. Caryopsis 1"5 mm., brown, 

 shiny, and easily separating. One awn is short, stiff 

 and straight and inserted above the middle of its glume ; 



