Wallichiane. N. O. Filices. 
DCCCCXXXVII. 
AspLEeNIUM (Asplenidictyon) FinLaysonranum, Wall. 
Frondibus subcoriaceis opacis oblongis pinnatis, pinnis 5-7 
remotis oblique patentibus ovato-lanceolatis longe acumi- 
natis subintegerrimis margine superiore infra medium 
productis angulatis vel acute auriculatis basi cuneatis in 
petiolum brevem attenuatis, terminali subrhombea sepe 
triloba lobis ineequalibus, venis marginem versus anastomo- 
santibus apiceque arcu conjunctis, stipite rachique com- 
. deciduo-subpaleaceis, caudice crasso squamoso 
) 
Toso. 
Asplenium Finlaysonianum, Wall. Cat. n. 2682. 
Asplenium integerrimum, Wall. in Hook. et Grev. Ic. Fil. t. 
136, (inaccurate in the venation). 
Has. Nepal and Kamaoun, Wallich. Mishmee, Griffith. 
Gowhatty, Assam, Simons. 
Our figure of the venation of the present East Indian Fern, 
in Icones Filicum, is inaccurate, and it is a plant that deserves 
to be better illustrated; the more so as our next plate will 
represent a Fern with very similar habit, and exactly similar 
venation, from the West Indies. Of the two Mr. J. Smith pro- 
poses to constitute a genus “ Asplenidictyon.” Trusting, pro- 
babably, to the figure in the Icones Filicum, Presl has placed 
Aspl. Finlaysonium in his group of Asplenium, “Venis venu- 
lisque apice liberis.” In the “venule apice arcu transyerso 
conjuncte,”our plant approaches Presl’s Thamnopteris section of 
Asplenium ; but, more than this, the veins anastomose, more 0 
less, below the apices, as in Oxygonium, where however the 
involucres are diplazoid. It borders too upon Hemidietyon ; 
differing in wanting the marginal vein which unites the late 
veins in Asplenium(Hemidictyon) mat 
venation affords beautiful sectional characters, but does not 
necessarily afford sound generic distinctions. 
Fig. 1. Portion of a fertile pinna, seen from beneath :— 
magnified . 
