﻿VI. POLYPODIACEAE. § 3. DAVALLIEAE. 127 



e. Indusium fastened at the base, open at the sides and 

 the outer edge. 



±. Sori placed in conspicuously cucullate, marginal 

 outgrowths, wich are closed by the ± flattened, 

 transversally oblong indusia. 



No. 31. ^accoloma [sorU folium). 

 1.1. Sori not on marginal outgrowths. 



3. Rhizome creeping; stipes scattered, articulate 



to the rhizome. No. 32. Humata.. 



2.2. Rhizome erect; stipes tufted, not articulate. 



No. 55. Aero|»Iiorus. 

 e.e. Indusium fastened at the base and sides, open at the 

 outer edge. 



f. Rhizome scaly, the scales often hair-pointed at 

 the apex, not minute. 

 g. Stipes articulate to the rhizome, scattered. 



No. 54. DaTallia. 

 g.g. Stipes not articulate to the rhizome. 



h. Sori 1 to each ultimate segment. In- 

 dusium half-cupshaped. 

 (No. 5S. Asplenium, § Loxoscaphe). 

 h.h. Sori many to each ultimate segment. 

 Indusium cuneate. 

 No. 51. ^aceoloma {moluccanum). 

 f.f. Rhizome hairy, fibrillose or minutely scaly, creep- 

 ing. Stipes not articulate to the rhizome. 

 >fc. Ultimate divisions unequal-sided, rhomboidal 

 or linear-triangular and then gradually nar- 

 rowed towards the apex. Receptacle 

 distinct. No. 35. Microlepia. 



>K.*. Ultimate divisions linear-lanceolate or divided 

 into ± linear segments, with the broadest 

 part in the centre. Receptacle indistinct. 



No. 36. TaiBeiiiicEiiiiii. 



