rTEBIDE-S!. ill. 



connivent over the narrow ultimate segments. Veins (sterile) 

 simple and costseform in the ultimate segments ; or (fertile) pin- 

 nate from a central costa, the few branches united near the 

 margin by the transverse receptacle. 



Fronds bi-pinnately or decompoundly pinnatisected, some- 

 times sub-membranaceous, usually with small narrow segments. 

 Rhizome creeping. A small group of elegant ferns, with 

 decompound fronds, and small ultimate segments, the fertile 

 parts soriferous along the margins. 



Ex. : 0. auratum, Klfs. I O. lucidum, Spr. 



O. strictum, Eze. \ O. melanolepis, Eze. 



50. OCHROPTEBIS, J. Smith, HooTc. Jowrn. Sot. iv. 158. 



AiiAirn sp., Swartz; CHEILANTHIS sp., Bory ; CASSEBEEIUJ sp., A, 

 Sraun JET6., (Fie) ; PTEBIDIS sp., Metteniug. 



Sori indusiate, transverse marginal, oblong or sub-orbicular, 

 occupying the apices of the lobes ; the receptacle transversely 

 combining the apices of from two to four converging venules. 

 Indusium of the same form, consisting of the reflexed scarcely 

 altered margin. Veins forked from a central costa ; venules free. 



Fronds large, decompound, coriaceous. Stipes and rachis 

 pallid. Rhizome short decumbent. A genus of large compound 

 ferns, with slight, technical characters to distinguish it from 

 Pteris, beyond the comparative shortness of the sori. 



Ex.:0. pallens, .7. flra. 



61. HAPLOPTEBIS, Presl, Tent. Pterid. 141. 



PTBBIDIS sp.,Sory; T.sifiopsiDis sp., J. Smith; PTBBOPSIDIS sp., Des- 

 vaitac ; VraiABi.fi sp., Mettenius. 



Sori indusiate, linear, continuous, on a transverse marginal 

 receptacle. Indusium broad firm marginal, inflexed, i.e. opening 

 on the inner side (pteroid). Veins simple, from a central costs, 

 remote, internal, combined in the fertile fronds by the receptacle. 



Fronds simple, coriaceous, fasciculate. Rhizome sub-globose. 

 The internal dehiscence of the indusium at once distinguishes 

 this from the Vittariece, while the presence of the indusium 

 equally separates it from the Tcenitidece, with each of which it has 



