11] 



Struchtral Characters : Plants 



23 



was described by Correns {y"]) who gives a striking diagram 

 representing his results. The cross was made between 

 two forms known as Dodartii and pilulife^^a, which were 



tr. 



regarded by Linnaeus as distinct species. The ahiiost 

 entire-leaved Dodartii has been treated by later authors 

 as a variety oi pihilifera. 



