208 CHARACTERS OF TEIBES AND GENERA. 



Dubreuillianum, Gaud, in Frey. Voy^ t. 9) ; N. aristatum, 

 Fee (Hook. Sp. Fil.) ; 1ST. ferox, Bl. ; N. patens (Goniop- 

 teris, Fee) N. articulatum, Moore and Houlst ( v v.) (N. 

 pennigerum, Hook. Sp. Fit.) ; N. truncatum, Pr. (v v.) ; 

 N. abruptum, Pr. ; N. arbuscula, Desv. (N. Hookeri, J, 8m.) 

 (v v.) ; N. arbor tivum, Fee (v v.) ; 1ST. venustum, /. Sm. 

 (v v.) ; N. refractum, Hook, (v v.) ; N. brachyodon, Hook. 

 (Phegopteris Seemani, J. Sm. in Bot. Voy. of Herald). 



ft Pinnae narrow^ generally deeply pinnatifid, with only 1 or 2 



venules anastomosing. 



N. hirsutum, J. Sm. ; N. angusfcifolium, Pr. ; N. mu- 

 cronatum, /. Sm. ; N. diversilobum, Pr. ; N. molle, JS. Br. 

 (v v.). 



II. NEPHRODINUM. 

 Vernation distant, sarmentose. Fronds uniform lipinnatifid. 



N. unitum, Hook, (v v.) ; N. propinquurn, R. Br. ; N. 

 varians, Fee ; N. aridum, /. 8m. ; N. nmltijugum, (Wall.) ; 

 N. pteroides, /. Sm. (Aspidium terminans, Wall) (vv,) ; N. ve- 

 nulosum, Hook, (v v.) ; N. extensum, El. (N. Cuminyi, J. Sm. 

 En. Fil. Phillip. Cuming, 391.) ; 1ST. Haenkeanum, Pr. 



OBS. The above species are widely spread, being found 

 in all fern regions within the tropics and sub- tropical 

 regions of both hemispheres. 



I have already stated that the presence or absence of 

 indusia is the only character for distinguishing Nephro- 

 dium from Goniopteris, and that consequent on its fugacious 

 nature the species normally indusiate when placed in the 

 herbarium the indusium fall away and thus become Goniop- 

 teris, much depends upon the age of the fronds when 

 gathered or the condition under which they are preserved, 

 for it is known that in the herbaria of different botanists 



