. 908 CHARACTERS OF TRIBES AND GENERA. - 1 
` Dubreuillianum, Gaud. in Frey. Voy., t. 9); N. aristatum, 
Fée (Hook. Sp. Fil); N. ferox, Bl. ; . N. patens (Goniop. 
teris, Fée); N. articulatum, Moore and Houlst ( v v.) (N. 
- pennigerum, Hook. Sp. Fil.) ; N. truncatum, Pr. (v ANS 
N. abruptum, Pr.; N. arbuscula, Desv. (N. Hookeri, J, Sm.) 
(v v.); N. arbortivum, Fée (v vi: N. venustum, J. Sm. 
(v v.) ; N. refractum, Hook. (v v.) ; N. brachyodon, Hook. 
(Phegopteris Seemani, J. Sm. in Bot. Voy. of Herald). 
++ Pinne narrow, generally deeply pinnatifid, with only 1 or 2 
; venules anastomosing. 
N. hirsutum, J. Sm.; N. angustifolium, Pr.; N. mu- 
cronatum, J. Sm.; N. diversilobum, Pr.; N. molle, R. Br. 
(v v.). 
Sect. II.—N EPHRODINUM. 
Vernation distant, sarmentose. Fronds uniform bipinnatifid. 
N. unitum, Hook. (v v.); N. propinquum, R. Br.; N. 
varians, Fée; N. aridum, J. Sm. ; N. multijugum, (Wall.) ; 
N. pteroides, J. Sm. (Aspidium terminans, Wall) (vv,); N. ve- 
nulosum, Hook. (v v.) ; N. extensum, Bl. (N. Cumingi, J. Sm. 
En. Fil, Phillip. Cuming, 391.) ; N. Haenkeanum, Pr. 
Ozs.—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- 
leris, 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 
