206 



F I L I C E S. 



8. POLTSTICHUM PLATYPHYLLUM, Presl f 



P. stipite sulcato paleaceo-hirsuto ; frondibus bipinnatis apice pinnatis; 

 pinnis subpetiolatis altemis adscendentibus ; pmnulis glabris trape- 

 zoideo-oblo?igis acutis spinuloso-serratis basi supra auricidatis ; rhachi 

 cum costa rufo-villosa ; soris magnis solitariis sparsis. 



Polysticfium platypliyllum, Presl, Tent. Pterid. p. 84 ? 

 Aspidium platyphyllum, Willd. Spec. PI. 5, p. 255. 



Hab. Organ Mountains, Brazil. 



Stipe a foot and upwards in length, sidcate in front, chaffy-hirsute 

 with long, brown, entangled, slender paleae. Fronds about 20 inches 

 in length, elongated-lanceolate, somewhat flaccid, bipinnate for more 

 than two-thirds of its whole length, towards the point simply pinnate. 

 Inferior pinnae distant and subalternate, the upper ones alternate, 

 approximate, ascending, seated on a very short petiole, oblong-lanceo- 

 late and attenuated into a deep and sharply serrate point, Pinmdes 

 smooth on both sides, of a lively green colour, subcoriaceous, from 8 

 to 10 lines long and 5 to 6 lines broad, trapezoidcd-oblong, slightly 

 falcate, acute, spinulose-serrate, the superior base auriculate-lobed. 

 Bhachis (main and secondary) villous on both sides, together with the 

 oosta3form veins beneath, with copious brown hairs. Sori large and 

 solitary, rather sparse: the indusium so obliterated that its form 

 cannot be distinctly made out in the specimens. 



We have little doubt that this is the Aspidium platyphyllum of 

 Willdenow ; although the pinnules of our plant are somewhat larger 

 than he describes them. 



9. POLYSTICHUM COPJACEUM, Schott. 



P. stipite aspero paleaceo; frondibus subbipinimtis coriaceis glabris; 

 pinnis altemis lanceolatis acuminatis basi pinnatis; pinnulis ovato- 

 oblongis acutis vel lanceolatis argute serratis; rfiachi cum costa crinito- 

 paleacea; soris solitariis subseriatis ; indusio magno peltato integer- 

 rimo. 



