vill] AWNS 129 
Further important distinctive characters are obtained 
from the absence or presence of awns, and the peculiarities 
—length, stiffness, &c.—of the latter. The awns may be 
Fig. 47. <Arrhenatherum avena- Fig. 48. Lolium temulentum. 
ceum. The ‘‘double seed” (a Type of boat-shaped ‘‘seed”’ 
and b) consists of two pairs of with sub-terminal awn arising 
palee with their enclosures. from between two teeth. ¢, 
The lower pair (vy) are devoid ‘“seed,” nat. size; a and Bb, 
of fruit, and the outer palea ditto, x6. Note the large 
has a long twisted and kneed smooth rachilla. Nobbe. Cf. 
basal awn: the upper pair (8) Fig. 57. 
enclose the fruit, and the palea 
has a short straight awn. Note 
the stiff basal hairs. a, nat. 
size; b, x about 6; c, caryopsis, 
nat. size; d, ditto, x 6. Nobbe. 
w. 9 
