PTEEIDE2E. xliii. 



Fronds herbaceous, large, pedately-branched or bi-pinnate. 

 Rhizome short, erect. The only distinction between Campteria 

 and Pteris consists in the constant presence of arcuate costal 

 areoles in the former, while the veins in the latter are wholly free, 

 except where combined at the margin by the receptacle. The 

 difference is slight ; it is nevertheless analogous to the structure 

 which is mainly characteristic of Hemitelia and Pleocnemia ; and 

 is at least more marked than the mere confluence of the veins, as 

 occurs in Goniopteris: by which latter character only the last- 

 named genus has been distinguished by botanists who do not 

 usually recognize the differences of venation as important. Cam- 

 pteria becomes a useful intermediate group between Pteris and 

 lAtobrochia. 



Ex. : C. biaurita, SooTc. I C. heterophlebia (Pteris, Kze.) 



C. pseudo-lonchitis, Presl. \ C. Gardner! (Litobrochia, Fee.) 



(c) Veins uniformly reticulated, witJwutfree included veinlets. 



54. LONCHITIS, Linnaus, Gen. PI. 781. 

 PTEBIDIS sp., Mettenius. 



Sori indusiate, marginal, narrow, lunately-linear in the sinuses 

 of the lobes and lobules (sometimes also continued along their 

 margins) ; the receptacles transversely uniting the apices of several 

 converging venules. Indusium of the same form, membranaceous. 

 Veins reticulated, with a central costa, the lowest branches form- 

 ing one series of elongated costal areoles, the remaining venulet 

 anastomosing in several series of oblique irregular hexagonal 

 areoles. 



Fronds large, herbaceous, bi-tri-pinnate. Ehizome thick, sub- 

 globose. Large, coarse, herbaceous ferns; sometimes by the 

 elongation of their sori approaching to Pteris ; nevertheless 

 tolerably well defined and recognisable. 



Ex. : L. pubesceng, Willd. I L. glabra, Sory. 



L. natalensis, Sook. \ L. madagascariensis, JZbofc. 



55. LITOBROCHIA, Presl, Tent. Pterid. 148. 



HISTIOPTEBIS, Agardh; DOETOPTERIS, J. Smith; HETBEOPHIBBIITM, F4e; 

 PTEEIDIS sp., Auct. ; POLTPODII sp., Auct. ; ACKOSTICHI sp., Auct. ; 

 CHEILAMTHIS sp., Auct. ; LONCHIIIBIS sp., Liniueut. 



