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Fig. 5 ： surface-view of the median portion of frond showing 

 the base of an older leaf, b, proliferating another one, a 、- ― 

 Fig. 6 : sporophyll bearing sorus, ― Fig. y : surface-view of 

 the sorus, — Fig. 8 : half of the cross-section of frond, ― 

 Fig. g ： surface-view of the frond to show the marginal reticula- 

 tion of cells and root-like prolongations, ^―. 



