ENUMERATIO FILICUM PHILIPPINARUM, 401 



70. E. ohtusifolium. — Acrostichum obtusifoliiim, JVilld.; 



Blume. — Acrostichum deciirrens, Blume Luzon; (n. 144, 



193.) 



PoLYBOTRYA. Humb. ; J. Sm. 



71. P. serrulata, J. Sm. — Luzon; («. 47.) 



72. P. intermedia, J. Sm. — Luzon ; (??. 269.) 

 VS. P. apiifoUa, J. Sm. — Luzon ; (w. 26.) 



74. P. articulata, J. Sm — Leyte ; {«. 296.) 



Stenochl/ena, J. Sm. 

 (Olfersia, Preslin part.) 



75. S. scandens. — Acrostichum scandens, Linn. — var. a. 

 Luzon ; (n. 133.) — var, /3. Luzon; (n. 226.) — var.y. Kegros ; 

 («. 347.) 



Ohs. These varieties diifer slightly in the base of the pinnae 

 being cordate in one, and elliptical in the others, and also in 

 their margins being more or less undulate and serrated ; but 

 on comparing them with other specimens, I am inclined to 

 consider them onl}'- as so many different forms of one species. 

 This fern is (like many of its allies) epiphytal, the rhizoma 

 creeping to a considerable height, and bearing the usual 

 characteristic barren and fertile fronds, which are pinnate, 

 and from two to three feet in length ; but what renders this 

 fern remarkable, is its producing a third kind of barren 

 frond, so unlike the others, that, in the absence of good autho- 

 rity it would be difficult to believe they were the produc- 

 tion of the same plant. These abnormal fronds are usu- 

 ally about three inches in length and tripinnatifid, not unlike 

 some delicate multifid species o^ Davallia or Cheilanthes : 

 they are found on lengthened j-achis-like parts of the rhizoma, 

 which are either smooth or aculeate. My first knowledge of 

 this singular production was from a specimen sent me by 

 Professor Reinwardt of Leyden in 1837, under the name of 

 Lomaria polymorpha (Lomaria aculeata, Blume) ; and till 

 now I concluded that some mistake had happened in label- 

 h'ng the specimens ; but from Mr Cuming's authority and 

 Reinwardt's specimen, there can be nowno doubt that itisape- 

 Vol. III. — No. 24. 3 F 



