HORDEUM 



143 



grows under the lemma and palet to the anterior end of the 

 grain and there becomes free. The coleoptile then opens 



Jemma 

 / yindicule 

 jtamen 



Fig. 52.— Diagrams showing the relative position of spikelets in barleys 

 A. six-rowed (Hordeum vulgare hexastichon) ; B, four-rowed barley (H vul- 

 gare pallidum); C. two-rowed barley (H. distichon); D. medium barley (H 

 vulgare intermedium). (After Broili.) 



and the first foliage leaf appears. In the germination of 

 barley, the young leaves become twisted. This is character- 



