TAB. XIII. 
Hymenophyllum Simonsianum, Hook 
Caudice filiformi gracili longe repente, frondibus solitarlis 
distantibus oblongo-lanceolatis membranaceis laxis fuscis 
bipinnatifidis in stipitem brevem gracilem basi attenuatis 
apice obtusis, lobis primariis semiuncialibus oblique cuneatis 
sub lente argute serratis margine inferiore truncatis integris 
superiore cum apice lobato-pinnatifidis, lobulis paucis (3-5) 
obtusissimis, involucris in lobis terminalibus frondis ovalibus 
subobovatisque exsertis profunde bivalvibus, valvis convexis 
subspinuloso-serratis, venis apice clavatis, soris inclusis re- 
captaculum tegentibus. 
Hab. Khasya Hills, Eastern Bengal, Simons. 
This does not appear to be anywhere described, though it 
must be confessed, that in so extensive a natural genus, it 
is very difficult, and in a few words, to define the character 
of any particular kind. Accurate figures are most to be de- 
pended upon. 
Fig. 1. A superior fertile lobe. f. 2. Involucre laid open 
vertically shewing the sorus. f. 3. Entire involucre : — 
magnified. 
Cent, 2. t. 13. 
