REVIE BHYr>LOGTQUE 



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H. 



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D 



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Fig. 2 



Tran<?verse section of thallus. The large dofs indicate the oil-bodies, 

 the doited line the posiiion of the mycorliiza. The narrow rliizoids 

 are shown mostly in cross section, the wide ones (of which thz'Ge are 

 shown) are only borne on the median portion of the thallus. X ^5. 



Vertical longitudinal section through the growing-point of llie thallus, 

 showing the apical (x.) and the large club-shaprd mncilago-liairs; 

 on the lower surface behind the apical cell are shown two of the 

 narrow rhizoids. X 1-0. 



Horizontal section through the growing-point, showing the apical cell 

 (x.) and its segments, with the large mucilage-hairs in cross- 

 section >jj l^i). 



Part of A., traversing the mycorhizal zone, the cells of which contain 

 branching fungal hypha?, some of the latter being shown in the 

 rhizoids- Three of the oil-conlaining cells are shown ; the cells above 

 the mycorhiza contain starch-grains, and the two upper layers 

 of cells contain chloroplasts. X 120. 



