PTBBIDE^. xliii. 



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

 Ehizome sbort, erect. — The only distinction between Campteria 

 and Pteris consists in the constant presence of arcuate costal 

 areoles in the former, whUe the reins in the latter are whoUy 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 Semitelia and Pleocnemia ; and 

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

 occurs in Goniojoteris : 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 usefiil intermediate group between Fieris and 

 XdtohrocMa. 



Ex. : C. biauritii, Sooh. I C. heterophlebia (Pteris, Kze.J 



C. pseudo-lonchitis, Presl. \ C. Gardneri (Litobrochia, F^e.J 



(c) Veins uniformly/ reticulated, without Jree included veinlets. 



54. LONCHITIS, Urmaus, Gen. Fl. 781. 

 Ptebidis sp,, Meitenius. 



Son indusiate, marginal, narrow. Innately-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. Indusi/um of the same form, membranaceous. 

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

 ing one series of elongated costal areoles, the remaining venules 

 anastomosing in several series of obhque irregular hexagonal 

 areoles. 



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

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

 elongation of their sori approaching to Pteris; nevertheless 

 tolerably well defined and recognisable. 



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



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



55. LITOBBOCHIA, Presl, Tent. Pterid. 148. 



HiSTloPTEEia, Agwrdh; Doktoptebis, J. Smith; Heteeophlebium, Fee; 

 Ptebidis sp., Auct ; Polttomi sp,, Auci. ; Aceostiohi sp,, Auct, ; 

 Chbilamihis sp., Auct.; LoifCHiTiDis sp,, Ziiinwm, 



