CHARACTERS OF TRIBES AND GENEBA. 121 



Sp. D. rarcata (Wttld.) (v v.) ; D. subpinnatifidum, 

 (Moore) . 



OBS. The latter species is probably a variety of the 

 first, the chief difference being that in some specimens the 

 venules of the lower part of the frond when sterile are 

 free. 



Natives of the West Indies and Tropical America. 



37. NEURODIUM, Fee (1842). 

 Tcenitis sp. Sw. ; Hook. Sp. Fil. 



Surculum short, csespitose. Fronds contiguous, simple, 

 entire, 6 to 12 inches long, lanceolate, thick, the upper 

 portion partially contracted and fertile. Veins obscure. 

 Venules compoundly anastomosing. Receptacles compital, 

 forming a continuous marginal sorus. 



Type. Tcenitis lanceolata, It. Br. 



Illust. Hook. Fil. Exot., t. 45 ; Moore Ind.Fil.,p. 18, B ; 

 J. Sm. Ferns, Brit, and For., fig. 17. 



OBS. In my " Genera of Ferns," 1841, I placed this 

 genus under Drymoglossum ; but later observations lead 

 me to adopt Fee's view in separating it as a distinct genus. 

 It differs from Drymoglossum in the fronds being uniform, 

 and bearing the sporangia towards the apex, which is but 

 slightly contracted. 



Sp. N. lanceolatum (Sw.) (v v.) 



Native of the West Indies and Tropical America. 



38. SCHIZOLEPTON, Fee. (1842). 

 Lindsece sp. auct. ; Hook. Sp. Fil. 



Surculum short. Fronds dimorphous, 6 to 12 inches long, 

 stipitate, opaque and subcoriaceous, the sterile ones 

 cordate, entire, or trilobed ; fertile frond linear, more or 



