The Origin of Wheat. 



167 



primitive monocotyledon (fig. 32), will make this 

 perfectly clear. 



ax 



Fig. 4a — Diagram of Wheat flower. 



Here, a> represents the outer pale or normal sepal, 

 while a' and a^ represent the inne* pale composed of 

 the two united sepals. Again, b^ and b^ stand for the 

 two lodicules or surviving petals, while b^ marks the 

 place of the lost petal, now found in the bamboos 

 alone. The stamens are lettered r', c', and (?. The 

 two existing styles are shown by d} and d^, while d? 

 marks the abortive inner style, now not even present 

 in a rudimentary condition. It will be observed at 

 once that all the outer side is normal, and all the inner 

 side more or less abortive through pressure against 

 the axis. 



Thus it will be seen that the line of links which 



