92 AWNS [CH. 



(e.g. Melica) or membranous or stiff, or scarious (i.e. 

 browned, as if scorched) at the edges. In Hordeiim 

 some of the ghimes are so narrow and pointed as to 

 resemble stiff awns. In Catahrosa the glumes are trun- 

 cate, as if bitten off at the top. 



The Falece are also often more or less boat-shaped, or 

 flat ovate or oblong scales, usually more delicate than the 

 glumes and frequently pointed, or (especially the outer 

 pale) awned at the tip : in some cases, however, the awn 

 springs from the middle or base of the back of the pale, 

 and the latter may be bifid at its apex. The pale has 

 usually a distinct middle nerve. The inner pale is com- 

 monly the smaller and more delicate of the two, and is 

 sometimes difficult to see. 



Conspicuously awned Grasses. 



Avena. Agropy/'um cam num. 



Arrhenatheriim (Fig. .33). Lolium temulentum. 



Hordeum. Brachypodium sylvaticum. 



Brcmus. Festuca Myurus. 



And a few rare grasses like Panicum, Folypogon, Lagurus. 

 Grx^sses with no true awns. 



And a few rare forms like Leersia, Hierochloe, &c. 



