212 PTEHIS. 



Hab. " South America" {Fee). — " Filix siccitate subtus lucida, facie Chrysodii 

 sculpturati." — Unknown to me, but much of the character corresponds with our 

 previous species. 



85. Pt. (Litobrochia) papyracea. Fee; "fronds pinnate 

 bipinnate at the base alternate very glabrous, rachis deeply 

 channelled, frondules lanceolate acuminate serrated at the 

 apex acute at the base papyraceous when dry, pellucid 

 menibranaceous glossy, petiole and mesoneure channelled be- 

 neath, nervils forming hexagonoid unequal areoles (costal ones 

 broad, marginal ones narrow), sporothecia very narrow con- 

 tinuous, indusia with the consistence and colour of the lamina, 

 receptacle thick brown, sporangia ovate, annulus 16-18-arti- 

 culate, spores blackish." — Litobrochia papyracea. Fee, Gen. 

 Pterid. p. 136. 



Hab. " South America, Gardner. — Filix elata papyracea, frondulis remotis 

 exacte lanceolatis acuminatis." — As a plant of Mr. Gardner's it must have l)een 

 gathered in Brazil, the only part of South America visited by him. But though a 

 full series of his collections have come to us, we iind no bipinnated Litobroclna 

 corresponding with the above description. 



86. Pt. (Litobrochia) lanceeefolia, Ag, ; frond pinnate sub- 

 mem branaceous, pinnae linear-lanceolate shortly petiolate 

 finally acuminated entire, veins scarce prominent anastomos- 

 ing and forming subhexagonal areoles of which a series lies 

 close to and parallel with the costa having an obliquely 

 patent direction towards the margin, sori very narrow con- 

 tinuous or only interrupted towards the apex, rachis glabrous 

 brownish. — Ag. Spec. Gen. Pterid. p. 66. 



Hab. Interior of Madagascar, Bojer, in Herb. Nostr. — Two specimens only are 

 before me, both wanting the stipes, so that it is possible the species may be bipin- 

 nate, but it is more probably allied to the Brazilian Pt. splendeihs, Klfs., and 

 simply pinnate. Our largest specimen is 16 inches long; pinnae 5-7 inches long, 

 rather distant upon the rachis ; terminal one long-petioled. lateral ones sessile 

 above and even a little decurrent ; the rest are on very short slightly hispid peti- 

 oles. The largest and longest areoles formed by the anastomosing of the veins are 

 parallel with and close to the costa ; the rest are nearly regularly six-angled, and 

 form series which have an obliquely patent direction, and extend quite to the 

 margin. Involucre membranaceous, brown, very narrow. 



87. Pt. (Litobrochia) jOM/c/<ra, Schlecht. ; ample elongated 

 firm-meml)ranaceous bipinnate, pinnules distant lanceolate 

 finely acuminate the apex sharply (but not spinulosely) ser- 

 rated the base tapering always sessile unequal the inferior 

 base alato-decurrent, veins everywhere anastomosing, a series 

 of the longest and broadest areoles is next the costa, the rest 

 form long narrow very compact series or chains which are 



