PLATE 105 



A. — Awn-pointed individual, heterozygous for regressive 6-rowed and 2-rowed 

 characters. 



B. — Short-awned individual, heterozygous for regressive 6-rowed and 2-rowed 

 characters. 



C. — Long-awned individual, heterozygous for regressive 6-rowed and 2-rowed 

 characters. 



D. — Three spikes of Mansfield barley from the same plant, showing t£e variations 

 of fertility in the lateral florets. 



