ENUMERATIO FILICUM PHILlPriNARUM. 411 



Obs. This number probably consists merely of imperfect 

 specimens of the preceding, having been gathered from 

 plants growing within the influence of moist limestone rocks. 



Pleocnemia, PresL 



179. P. Leuceana, Presl — Polypodium Leuceanum, Gaud. 

 —Luzon; (n. 33, 34, 107.) Mindanao; (n. 289). 



Obs. The tribe Aspidiecc being distinguished from Pohj^ 

 podiecB by the sori always having a special indusium, and it 

 having been observed that this organ is often very fugacious 

 or so small as to become soon obliterated by the enlargement 

 of the sporangia, and as both Aspidiece and Polypodies con- 

 tain genera quite analogous in habit, venation, and position 

 of the sori, it therefore becomes difficult in the absence of 

 the indusium, to determine in which tribe those species so 

 circumstanced should be placed. Indeed, from my own ob- 

 servations, it appears probnble that many species described 

 as belonging to Polypodiece, are true AspidiecB, as is the case 

 with the present, and likewise with some species of the fol- 

 lowing genera. 



Nephr ODIUM, Schott ; Presl. 

 (Cyclodium, Presl.) 



180. N. Blumei, J. Sm Gymnogramma canescens, Bltnne. 



■ — Goniopteris canescens, Presl. — Samar ; {n. 322.) 



181. N. simplicifolium, J. Sm. — Leyte; («. 315.) 



182. N. acrostichoides, J. Sm — Luzon; {n. 149.) 



183. N. glandulosim.—ks^'idxnm glandulosum, Blitme. 

 —Luzon; {n. 16.) Leyte; (7?. 298.) 



184. N. caudicidatiim,P res\ Aspidium, sp., Sieb. — Luzon; 



(«. 10, 84.) Leyte; (w. 317.) Zebu; (n. 338.) 



185. N. unititm, R. Br Luzon ; («. 259.) 



186. N. Cumingii, J. Sm.— Mindanao ; (n. 293.) Malac- 

 ca ; (n. 391.) 



187. N. abruptum, J. Sm.— Luzon ; (n. 120.) 



188. N. canescens, Presl. — Aspidium canescens, JVall. — 

 Luzon; (n. 254.) 



