70 



Botanical Section 



[PT I 



"Seeds" Outer palea 5-6 mm. long, yellow or straw coloured, 

 or sometimes of a brownish hue, with a pointed bifid apex. The 

 outer palea bears a sub-terminal or dorsal twisted and " kneed " awn, 

 generally rather longer than itself. Inner palea 4-5 mm. long, 

 membranous, very thin, without a marginal hair-fringe. Rachilla 



Fig. 53. Three panicles of Arrhenatherum avenaceum, Beauv. About \ nat. size. 



rather long, outstanding, cylindrical and thickening towards 

 the top, bearing long silky hairs. A tuft of silky hairs is also 

 present at the base of the seed. (Fig. 58.) 



Avena pratensis, L. (Perennial Oat-grass.) (Fig. 59.) Widely 

 distributed though not abundant in Britain. 



An entirely glabrous, tufted perennial. Blades folded in the 



