268 



PRINCIPLES OF PLANTrTEEATOIiOGT. 



tip a kind of hood-shaped appendage which is directed 

 outwards almost at right angles to the pale. Right 

 and left of this spur-like appendage the margin of the 

 pale is produced into two more or less long, triangular 

 or awn-like teeth. The inwardly-recurved apex of 



Fio. 154. — Rordeum trifurcatum (Nepaul Barley). Ear bearing spikelets 

 ■with adventitious flowers. (S. Garside photo.) 



the hood-shaped appendage may (in some varieties) h& 

 produced into a more or less stout awn." " On the 

 inner side of the hood-shaped extension there may often 

 appear small scales, arranged distichously on a short 

 axis, and between which, in many cases, flower-rudi- 

 ments arise. Wittmack sawin thev aviet j Horsfordianum 

 complete fertile flowers and ripe grains arising in the- 

 extension of the pale " (figs. 154 and 155). 



It would thus appear, from the purely outward 



