208 



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the base, open at the ap^x, i.e. exteriorly, 

 open or free at the sides. 



Indusium small, narrow, thin, fixed only 

 by its broad base. Rhizome creeping, 

 stipe articulated with the rhizome. 



Genus VII. Ltucostegia Presl. 41 



Indusium leathery, attached at sides 

 and base, half cup-shaped. Rhizome creep- 

 ing, stipe articulated with the rhizome. 



Genus VIII. Davallia Sm. 44 



Indusium membranaceous, half cup- 

 shaped, attached at the sides and base. 

 Rhizome creeping ; stipe continuous with 

 the rhizome. Genus IX. Microlepia Pn.sl. 46 



Indusium forming a compressed, almost 

 round or cup-shaped pouch, only open at 

 the top. Rhizome creeping ; stipes tufted, 

 not articulated upon the rhizome. 



Genus X. Stenoloma Fee 49 



TRIBE V. LINDSAYE^ 



Sori placed in a line at or near the 

 margin of the frond at the apex of and 

 uniting two or more veinlets. Indusium 

 double, i.e. formed of two valves, the inner 

 of which is membranaceous, the outer 



