TAB. LXXVIII. 
Asplenium ( Allan todia) Brownii, Hook . 
Frondibus amplis glabris deltoideis membranaceis bipinnatis, 
pinnis superioribns oblongis pinnatifidis reliquis iterum 
pinnatis, pinnulis ovato-oblongis serrato-dentatis, involucris 
oblongis demum cylindraceo-inflatis tenuibus fragilibus, 
stipite elongato nudo, rachi flexuosa. 
Allantodia australis, Br. Prod. p. 149. 
Athyrium australe, Presl , Tent. Pterid. 98. Fee , Gen. Fit. 
p. 186 . 
Hab. Van Diemen’s Land, Brown , J. D. Hooker , R. Gunn , 
Esq. New Zealand, Northern Island, Rev. W. Colenso , 
Allan Cunningham. 
We believe this to be identical, as to generic structure, with 
the Polypodium umhrosum , of Hort. Kew. on which Mr. 
Brown founded his genus Allantodia ; and the excellent Link 
and Kaulfuss unite with him in considering it distinct 
from Asplenium , u Involucro fornicato, e vena lateraliter 
orto, eaque utroque margine inserto, interiore dehiscente.” 
Presl and Fee, however, unite it with Atliyrium s and that 
view is adopted in our Genera Filicum, Tab. xvi. Mr. 
Bauer’s figure there given exactly represents the more 
mature sori ; but I have failed to detect the insertion of the 
two margins of the involucre on the vein. In a young state 
the involucre is nearly flat, and the outer margin appears to 
me to be free from any union with the vein. With regard 
to Athyrium , as it stands in Presl and Fee, it is made to 
contain some species with involucres so little inflated, that it 
would puzzle any one to say whether they should be referred to 
that genus or to Asplenium. u Le port et l’habitude generale” 
M. Fee observes Cf les distinguent des Asplenium , mais ils s’en 
rapprochent beaucoup par la nature de l’indusium, surtout 
lorsque ce tegument est court (abbreviatum).” 
Fig. Fertile segment : — magnified. 
