66 FERNS OF THE SULU ARCHIPELAGO. 



IDair shortly petioled, two- to three-forked from the base. Margin 

 of the barren segments sharply toothed. Veins distinct, erecto- 

 patent, usually once forked, rarely simple or twice forked. Invo- 

 lucre narrow, distinct. — Near P. cretica, but much more slender 

 and delicate in general aspect, with the lowest one to three pau'S of 

 pinnas two- to three-forked. Named at the request of Mr. Burbidge 

 in compliment to the Honourable W. H. Treacher, acting-governor 

 of Labuau, whose kindness and help contributed materially to the 

 success of his expedition. 



Lindsay a cultrata, Sw. 



Ldndsaya pectinata, Blume. 



Lindsay a jiahellulata, Dryand. 



Lijidsaya lohata, Poir. 



Lindsaya davallioides, Blume. 



Aspleniiim 2)ersicifoUum, J. Sm. An endemic PhiHppine species. 



Asplenium resectum, Smith. 



Asplenium falcatum, Lam. 



Asplenium hirtiim, Kaulf. 



Asplenium cuneatum, Lam. 



Asplenium Belanyeri, Kunze. 



Asplenium pallidum y Blume. 



Asplenium bantamense, Baker. 



Asplenium cordifolium, Mett. 



Nephrodium melanocaulon, Baker. 



27."^' PoLYPODiuM [Phegopteris) oxyodon. Baker, n. s^d. Khizome 

 short-creeping. Scales small, erect, lanceolate, membranous, dark 

 brown. Stipes tufted, naked, substramineous, half to one foot 

 long, slightly scaly only near the base. Lamina deltoid-oblong, 

 half to one foot long, bipinnatifid, moderately firm in texture, 

 green and quite glabrous on both sides. Pinnae nine to seventeen, 

 lanceolate, three to four mches long, one to one and a half mch 

 broad, cut down to a broad wing into lanceolate-oblong sharply- 

 toothed segments one-sixth of an inch broad, the end one like the 

 others, the upper side ones sessile, the lower side ones distinctly 

 petioled, the two to three lower i^airs about equal in size. Veins 

 in X3 innate groups m the secondary segments, with veinlets ten- to 

 twelve-jugate in* those that are most fully develoj)ed, many of them 

 two- to four-forked. Sori small, round, medial, placed on the 

 anterior fork of the veinlets. — A very distinct plant, alhed to 

 P. caudatum, of Tropical America. 



175.''' PoLYPODiuM (Eupohjpodium) Leysh, Baker, n. sp. Ehizome 

 as thick as a goose's quill, short-creeping. Scales small, dense, 

 dark brown, lanceolate. Stipe winged nearly or quite down to the 

 base, one to two inches long to where the pinnae begin. Lamina 

 lanceolate, firm in texture, minutely pubescent only on the rachis 

 beneath, green on both surfaces, six to nine inches long, one to 

 one and a quarter inch broad above the middle, narrowed gradually 

 from the middle to the base, cut down to the rachis into very 

 numerous crowded adnate linear subentire or slightly repand 

 pinnsB one -twelfth of an inch broad. Veins simple, erecto-patent, 

 ten- to twelve -jugate in the central pinna?, rather indistinct, not 



