VI. POLYPODIACEAE. § 3. DAVALLIEAE. " 121 



lateral veinlets or springing from the side 

 of a vein or veinlet. 



(No. 55. Asplenium, § Loxoscaphe). 

 9.7. Sori always terminal on rather long veins 

 or veinlets. 



S. Sori placed on cucullate marginal 

 outgrowths forming with the indusium 

 a saccate involucre to the sorus. 



(No. 4. JHchsonia). 

 S.S. Sori and indusia otherwise. 



9. Indusium narrowly cuneate, deeper 



than broad, fastened at the sides. 



S ■ Fronds small, simply pinnate, 



at best 2-pinnate at the base. 



No. 30a. Protoliudsaya. 



§$ Fronds large, decompound. 



No. 81a. Saccoloma. 

 9.9. Indusium broadly cuneate, broader 

 than deep, semicupuliform or 

 fastened by a broad base and 

 then free at the sides. 

 $ Ultimate segments rhomboidal 

 or linear-triangular, unequal- 

 sided at the base. 



No. 35. Miorolepia. 

 $$ Ultimate segments hnear or 

 oblong, not or hardly unequal- 

 sided at the base. 

 No. 36. Tapeinidiuin. 



§ 8. GYMNOGRAMMEAE. 



Veins quite free, in Malayan material. 



b. At least the fertile fronds coated beneath with white or yellow 



powder. No. 63. Ceropteris. 



6.6. Fronds not powdery beneath. 



c. Venation dichotomo-flabellate. No. 62«. Anograiuiua. 



