﻿112 MacDougal: The Mycorhizae of Aplectrum 



bling root hairs. The fungus sends hyphae out through these 

 hairs and it is to be seen that the offshoot has been converted into 

 an absorbing organ quite similar in structure and appearance to 

 the underground stems of Corallorhiza. Other anatomical in- 

 dications of the change in function are to be found. 



It is, of course, readily apparent that, if these structural rela- 

 tions are transmissible, we have here a method by which Aplec- 

 trum may easily pass from a hemi -saprophyte into a complete 

 dependence upon organic food with loss of chlorophyl. The 

 writer will report further upon various anatomical and ecological 

 features of the plant as soon as experiments now in progress are 

 completed. 



