CHARACTERS OP TRIBES AND GENERA. 181 



same genus with Brynaria and PJtegopteris of this work. 

 Under Orammites I comprehend all the simple linear- 

 fronded forms having free veins and one row of sori 

 on each side of the mid-rib, the sori being more or less 

 oblong or linear or sometimes even punctiform, the single 

 row being the chief distinction between it and Gtenopteris. 

 This latter genus, however, also contains a few single- 

 fronded species, but they have a higher degree of develop- 

 ment, the fronds being normally pinnatifid and each lacinte 

 having its mid-vein with soriforous venules on each side. 



Blume, in his " Flora Javanica," figures and describes 

 no less than twelve species of Orammitis as natives of Java. 

 Not having seen specimens of many of these, and the 

 figures being much alike, I am quite unable to arrive at a 

 satisfactory conclusion regarding them. Sir William 

 Hooker also appears not very satisfied with many of them. 

 It can only be by carefal examination and comparing them 

 one with another in a living state, either in their native 

 country or brought together under cultivation, that the 

 species can be determined, they are widely dispersed, 

 being found in both hemispheres, the greater nunaber 

 are found in the Malayan Islands, and extending to 

 Australia. 



Sp. G. tenella, Kaulf ; G. farcata, Mool:. and Orev. ; G. 

 Zeylanica, Fee ; G. marginella, Swartz. (v v.) ; G. aus- 

 tralis, E. Br. (v v.) ; G. attenuata, Kunze. ; G. fasciata, 

 Blume ; G. sessilifolia. Hook. ; G. hirta, Blume ; G. con- 

 formis, Brad:, and HooJc. ; G. setigera, Hook, and Am. ; 

 G. fasciculata, Blume ; G. Sprucei, Hook. 2nd Gent, of 

 Ferns, t. 6 ; G. organensis, Gardn. Hook. Ic. PL, t. 509 ; 

 G. subpinnatifida, Blume. 



