(b) Veins reticulated, without free included veinlets. 



40. SCHIZOLOMA, Gaudichaud, Freycinet's Voy. 378, 



t. 1618. 



PBBICOPTIS, Wallich Hb.; STWAPHLBBIUM, J. Smith; (Synphlebinm > 

 Fte); DIELLIA, Brackenridge ; LIXUS.>:.E sp., Auct.; PTEBIDIS sp., And!; 

 ADIAWTI sp., Auct. ; DAVALLLS sp., Hooker. 



Sori indusiate, linear or oblong, continuous or interrupted ; 

 the receptacles sub-marginal. Indusium membranaceous, equalling 

 or shorter than the margin of the frond, opening on the exterior 

 side. Veins ecostate, or forked from a central costa; venulet 

 anastomosing in elongated oblique areoles, without free included 

 veinlets, the marginal ones combined by the transverse receptacle. 

 Fronds herbaceous, simple lobed or pinnate, rarely bi-pinnate; 

 pinnec or pinnules equal-sided or dimidiate, fertile on the upper 

 margin only, or on both margins. Khizome creeping. This 

 genus differs from Lindscea only in its simply reticulated ve- 

 nation. In the species referred to Diellia, the sori are constantly 

 short and distinct ; but this peculiarity, disregarded in Adian- 

 tum, cannot here be admitted to be of generic value. 



Euschizoloma. Divisions of the frond isomerous, with a midrib. 

 Ex. : S. ensifolium, J. Sm. \ S. Guerinianum, Gaud. 



S. Fraseri, Fee. S. faleatum (Diellia, BrackenridgeJ 



S. Griffithianum, Fee. \ S. erectum (Diellia, Brackenridge.} 



Synphlebium. Divisions of the frond dimidiate, the costa excentrie or 

 wanting. 



Ex. : S.propinquum (Lindsaea, Hk.) \ S. recurvatum (Lindssea, WallJ 



8. davallioides (Lindsaea, Bl.J \ S. Pickeringii(Synaphlebium,JJroci.^ 



(c) Veins compoundly reticulated, with free included veinlets. 



41. DICTYOXIPHIUM, Hooker, Gen. Fil t. 62. 



LllfDS sp., Mettemug. 



Sort indusiate, linear, continuous; the receptacles sub-marginal. 

 Indusium not equalling the attenuated margin of the frond. 

 Veins compoundly reticulated, sub-uniform, from a central 

 costa, internal ; venules anastomosing in unequal hexagonal 

 areoles, from which proceed free included simple or forked diva- 

 ricate veinlets, which are thickened at the apex. 



D2 



