PLATE XXII 



: ". 









FIGURE a. 



FIGURE b. 



Enlarged Sections of Lychee Root Tubercles Showing the Cells Gorged with the 

 Mycorhizal Fungus. Microphotographs by Dr. Emil G. Arzberger. 



(See page 152 and the detailed description of illustrations.) 

 (FIGURE a, magnification iQ5 diameters; FIGURE 6, magnification 830 diameters.) 



