CHARACTERS OF TRIBES AND GENERA. 317 



* Vernation uniserial distant ; sarmentum slender. 



Sect. 1. CHEILOSORUM, Mett. 



Fronds pinnate, 6 to 14 inches long ; pinnce numerous, 

 approximate, f to 1 inch long, oblong lanceolate, dimediate. 

 Costve excentric, contiguous to the lower entire margin, superior 

 margin deeply laciniated. Sori short, oblong, on the apex of 

 the vein terminating each lacince. 

 Sp. A. heterocarpum, Wall (v v.) 



OBS. In the general outline and glossy texture of the 

 frond this agrees with the Trichomanoid section, but its 

 uniserial vernation and apical sori mark it as being dis- 

 tinct. 



** Vernation fasciculate. 



Sect. 2. CETERACHOPSIS, /. Sm. 



Fronds 6 to 9 inches long, 1 to 1| inch wide, smooth, deeply 

 pinnatifid, lacinaz uniform, obtuse. Veins dichotomously 

 forked. Sori oblong linear, the lower ones subparalld with 

 the costce. 



A. alternans, Wall, (v v.). 



OBS. Of this species Sir William Hooker says, " this is 

 a very peculiar looking plant, which, but for the absence of 

 the scaly covering, might be mistaken for Asplenium ceterach, 

 which also is known to have a minute asplenoid involucrum, 

 in this species, however, the veins are free. | 



Sect. 3. ASPLENITES. 

 Vernation erect or decumbent. Fronds simple or pinnate. 



1. PHYLLITIS GROUP. 



Fronds entire, linear lanceolate or broad elliptical. 

 A. ensiforme, Wall. A. sinuatum, Beauv. (v v.) ; A. 

 aquamulatum, Blume (v v.) ; A. Griffithianum, Hook. ; A. 

 serratum, Linn, (v v.). 



