414 ENUMERATIO FILICUM PHILIPPINARUM. 



abrupt attenuated acumen, the sori are close to the midrib, 

 and the articulated joint of the stipes is at its base close to 

 the rhizoma. lu the present specimens the apex of the 

 frond is rather obtuse, the sori are at some distance from the 

 midrib, and the articulation of the stipes is regularly a fourth 

 of an inch or more from its base. I am therefore induced to 

 consider these differences as constituting specific distinctions. 



214. O. neriiformis, Cav, — Aspidium neriiforme, Sw. — 

 Ophiopteris verticillata, Reinw. — Luzon; [n. 94.) 



Ohs. This is quite a distinct species from either the preced- 

 ing or the species from Nepal, which have creeping epiphytal 

 rhizomas ; whereas the rhizoma or caudex of this species is 

 erect, about half an inch in diameter and hollow ; it is from 

 four to six feet high, producing the fronds in verticillate 

 terminal tufts on lateral branches. It inhabits open places 

 growing in groups. 



Tribe VI. Dicksonieje. — Sori marginal, round, globose or 

 elongated, furnished ivith a special interior attached lateral 

 indusium, which connives more or less with the indnsiaiform 

 margin of the frond, and forms with it a calyciform or bivalved 

 cyst or marginal groove. 



Sect. I. LiiidscccE, J. Sm. 

 IsOLOMA, J. Sm. 



215. I. divcrgens Lindsoea divergens, Hook, et Grev. — 



Vittaria, Wall Malacca ; (w. 395.) 



Obs, Besides the above species this genus also includes the 

 Lindsaa lanuginosa of Wallich. It is distinguislied from 

 Schizoloma by its free venation, and from Lindscea by having 

 a central costa, and bearing sori equally on both margins. 



Schizoloma, Gaud. 



216. S. ensifolia. — Lindsaea ensifoiia, Sw Pteris angus- 



tata, Jy'oli — Pteris angulata, Presl. — Malacca; («. 369.) 



2 1 7. S. heterophylla. — Lindssea heterophylla, Dry. — Luzon ; 

 {n. 275.) 



