2Qg FILICES. 



Hab. Organ Mountains, and vicinity of Rio Janeiro, Brazil. 



Stipe smooth, usually longer than the frond, about the thickness of 

 a goosequill, rounded behind, angular and sulcate in front, chaffy with 

 broad and membranaceous brown palese, which, on being removed, 

 leave a small black dot at the point of attachment. Fronds from one 

 to 2 feet in length, and as much in breadth at their base, triangular- 

 ovate and decompound; the branches tripinnate, coriaceous, smooth on 

 both sides, and of a much paler colour on the lower surface: the 

 ultimate divisions or pinnules petiolulate, lanceolate, a little unequal at 

 the base and lobate-serrate, the inferior ones deeply pinnatifid. Segments 

 oblong, obtuse, toothed with very broad serratures. Primary rhachis, 

 together with that of the ultimate divisions, pilose-paleaceous. Sori 

 large and solitary, with a round, peltate, entire, caducous indusium. 



Kaulfuss has united this to the preceding species ; but, although the 

 two have some points in common, they are nevertheless distinct. 

 The present species has large and decompound fronds, of a much 

 paler colour on the under than upper surface, smoother stipes, and a 

 larger, entire, caducous indusium. 



11. POLYSTICHUM HISPIDUM, J. Sm. 



Polystichum Jiisjridum, J. Sin. in Hook. Jour. Bot. 4, p. 195. 



Aspidium Msjndum, Sw. Syn. Fil. p. 56; Willd. Spec. PI. 5, p. 266; A. Rich. Bot. 

 Voy. Astrol. p. 69 ; A. Cunn. in Hook. Comp. Bot. Mag. 2, p. 367. 



Hab. Forests, in the vicinity of the Bay of Islands, New Zealand. 



An elegant and rather remarkable species, on account of its dark 

 brown, hispid stipes, usually about the same length as the frond, with 

 a single groove in front ; the cross section reniform. Fronds almost 

 invariably tripinnate, at least at the base, bearing a profusion of large 

 sori ; each serrature or incision having a single sorus near its base. 



64. DIDYMOCHL^ENA, Desv. 



(Aspidii Spec. Sw. & Auct. Tegularia, Reinw. Diplazii Spec. Raddi. Mono- 

 chl^nAj Gaud.) 



