232 PTERIS. 



nrackenr.) as to the proceding species {Pt. incisa, Th.). If I am correct in re- 

 ferring Agardh's Pi. Morrenhontiana liere, it is a native of Otalieite as well as of 

 Norfolk Island. A small specimen so marked, from Otaheite, in Mr. J. Smith's 

 Herbarium seems to be the same. The Tanna plant, from the Voy. of H.M.S. 

 Herald, is identical with the Norfolk Island specimens. JMettenius's figure of 

 Pt. aurifa, Bl., admirably represents our plant. 



120. Pt. (Litobrochia) sinuata, Brackenr. ; caudex long 

 creeping subterraneous, fronds scandent ample (18 feet long) 

 submenibranaceous dark green glaucous beneath tripinnate, 

 pinnse opposite or nearly so sessile (sometimes petiolate 

 from the suppression of the lower pair of pinnules) primary 

 ones 1-2 feet long, pinnules sessile broad-lanceolate 2-6 

 inches long 1-2 inches broad excised at the lower base 

 entire sinuate or more or less deeply pinnatifid with rounded 

 or ovate segments, lowest pair of pinnae often remote and 

 auriculiform upon the rachis, sometimes quite orbicular and 

 adnate, sometimes suppressed on one or both sides, terminal 

 one confluent, veins all copiously anastomosing to the very 

 margin, basal ones next to the costa and costules elongated 

 forming arches, the rest of the areoles suboval or oblong, 

 sori continuous from the base nearly to the apex, stipes 

 and rachises castaneous very glossy. — Litobrochia sinuata, 

 Brackenr. Fit. of U. S. Expl Voy. p. 110. t. 14. 



Ilab. Ovolau, Feejee Islands, in thickets, at an altitude of 2000 feet, Braeken- 

 ridge, Milne in Denham's Voyage of H.M.S. Herald, n. 290 ; Dr. Lyall, from 

 Voy. of Captain Erskine, R.N. Angau (same group), Milne, n. 263. Aneiteum, 

 M' Gillivray and Milne. — Mr. Brackenridge has given an excellent plate of this 

 Fern in the Bot. of the U. S. Voyage above quoted. He describes it as a Fern which 

 is subicandent, 18 feet and upwards in height. Dr. M'Gillivray notices it as 

 " climbing in woods, on mountains, with the habit of Lygodium." This habit, 

 together with the large size of the pinnules and their uniformly anastomosing 

 venation, would seem to be sufficient for keeping it distinct from PL incisa 

 ( Vesper tilionis of most authors), were it not for the PL Brunoniana, which, though 

 in general appearance closer allied to the last mentioned than to this, does par- 

 take too much of the characters of both to enable one to come to a definite 

 judgment. 



121. Pt. (Litobrochia) Currori, Hook.; tripinnate? pinncB 

 large 1^-2 feet broad-ovate submenibranaceous scarcely 

 glaucous beneath, pinnules subopposite broad-lanceolate 

 acuminate a span long quite sessile the lower half or two- 

 thirds sinuate or deeply pinnatifid, veins all copiously ana- 

 stomosing, areoles or arches next the costa very long and 

 narrow and solitary (one between each pair of costules) those 

 next the costule large, the rest smaller and broad oval, sori 

 continuous or interrupted, rachises pale-brown scarcely glossy 

 and slightly hairy l:)eiieath, pinnules deeply pinnatifid, seg- 



