BOTANICAL CHARACTERS 125 



be of any material injury to the plant — not even during the CHAP, 

 past summer when the plants were grown near Boston, where 

 they were exposed to moister conditions than is usually the 

 case in Nebraska." 



He concludes that it is the absence of the auricle that 

 makes the leaves stand so erect. " It is the triangular shape 

 of the auricle that makes possible the immediate flattening out 

 of the leaf blade at the termination of the cylindrical sheath, 

 and that allows the blade to bend abruptly away from the 

 stalk while the sheath still clasps it." 



