210 



veins, Dr. Arnott and luyself referred it to the Pteris pedata ; but lately ad- 

 ditional specimens from the same locality (Oahu) have led to a more accurate 

 investigation, and to the opinion that it is distinct, from all the varieties of 

 Pt. (Litohrochia) pedata, by the more compound nature of ils frond (always 

 tripinnatifid with numerous segments), as it is from Pellcea geraniifoUa in the 

 reticulated venation. In all probability, Mr. Brackenridge's Doryoptvris pedata, 

 from the " Sandwich Islands," is our plant ; and hence, in his remarks upon 

 it, he says, "some states of P. geraniifoUa, Raddi (which has a forked free 

 venation), might readily be mistaken for it when not carefully examined." 



81. Pt. (Litohrochia) decora, Brackenr. ; "ceespitose, sti- 

 pites smooth semiterete paleaceo-hirsute at the hase, fronds 

 glahrous hroadly ovate cordate at the base pinnated pinna- 

 tifid toNA^ards the apex, pinn£E pinnati-partite, segments linear 

 ol)tuse angled at the sinus, sori subcontinuous." — Dory- 

 opteris decora, Brackenr. Fil. U. S. ExpL Exped. ^j. 103. 

 t. 13./. 1. 



Hab. Sandwich Islands, in exposed situations, in crevices of rocks, and among 

 decomposed lava. — " Three to ten inches high : rootstock short, thick, squa- 

 mose. Pinnae opposite, of three or four pairs, spreading, deeply pinnatifid. Seg- 

 ments (remote) 1 to 1^ inch long, about two lines broad, linear, obtuse, the lower 

 and inferior one often again divided. Veins very slender and usually evident 

 to the naked eye, forming long, very oblique, angular areoles." — The figure of 

 this represents something very different from this group of Pteris, and quite 

 unknown to me : and the author remarks, " Although the fronds are not strictly 

 pcdate, yet they may be said to resemble, in many respects, some forms of 

 Doryopteris pedata ; but its much smaller size, deeper divided and less cori- 

 aceous fronds, the narrower and more uniform size of the segments, the sori 

 interrupted in the sinus, together with the paler stipes, readily distinguish it 

 from that species." — It is quite different from our preceding species {Pt. de- 

 cipiens. Hook.), which is equally a native of the Sandwich Islands. 



82. Pt. (Litohrochia) ludens, Wall. ; caudex long creeping 

 branched thicker than a crow's quill scaly throwing out copious 

 woolly fibrous roots, fronds remote on the caudex long-stipitate 

 coriaceous opaque pale beneath triangulari-subhastate and un- 

 divided or hastately 5-lobed or deeply 3-Iobed or 3-partiteand 

 pedate, the terminal lobe again 3- or pinnatifidly 5-lobed, the 

 lateral lobes pinnatifid more or less deeply on the inferior side 

 [deorsum pinnatifidis) , segments acuminate broad-lanceolate 

 or long-linear, veins everywhere laxly reticulated, the areoles 

 oblong and mostly parallel or nearly so with the costa and 

 margin, sori on the most deeply divided and narrowest fronds 

 continuous, stipes very long and as well as the main racliises 

 beneath black-ebeneous. — Pteris ludens, IVall. Cat. n. 88. 

 Doryopteris WaUichii, J. &m. En. Phil. Philipp. in Hook. Bot. 

 Journ. \\\. p. 404. 



Hab. Scendnea, Irawaddy, 1826, and caves of the mountain Nidan, Attran 

 River, 1827, Wallich, n. 88. Moulmeine, Thos. Lobb. Luzon, Cuming, n. 238. — 



