dle 
Gunniane. N. O. Filices. 
DCCCCLXXVIII. 
AspLEeNtIuM (Allantodia) Brownu, Hook. 
Frondibus amplis glabris deltoideis membranaceis bipinnatis, 
pinnis superioribus oblongis pinnatifidis reliquis iterum 
pinnatis, pinnulis ovato-oblongis serrato-dentatis, involucris 
oblongis demum cylindraceo-inflatis tenuibus fragilibus, 
stipite a nudo, rachi ig 
Allantodia australis, Br. Prod. p. 1 
ay SSSR Presl, Tent. Previd. 98. Fée, Gen. Fil. 
186. 
Has. Van Diemen’s Land, Brown, J. D. Hooker, R. Gunn, 
Esq. New Zealand, Northern Island, Rev. W. Colenso, 
Allan Cunningham 
We believe this to he identical, as to generic structure, with 
the Polypodium umbrosum, of Hort. Se. on which Mr. 
Brown founded his genus Allantodia; and the excellent Link 
and Kaulfuss unite with him in considering it distinct 
a Asplenium, “Tnvolucro fornicato, e vena lateraliter 
rto, eaque utroque margine inserto, interiore dehiscente.” 
Preal and Fée, however, unite it with Athyrium, and that 
view is nee aig our Genera Filicum, Tas. xvi. Mr. 
Bauer’s figure t here 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 Fée, 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 
enus or to Asplenium. “Le port et Vhabitude generale” 
ée observes “les distinguent des a ada mais ils s’en 
pappronhaie beaucoup pat i ture de Vindusium, surtout 
lorsque ce tégument ae court (abbreviatum).” 
Fig. Fertile segment :—magn = 
Re gn. | f k \ a } } , wd 
‘e net J pipe po kaie ee i £.. fe €£ bt | 
