concealed in it, but afterwards they appear through those aper- 
tures in this mass, which have given rise to the specific name 
applied to this individual by the late Dr Roxpureu. Spe- 
cimens of Dr Roxsuren’s plant, gathered in the Delta of the 
Ganges, I possess through the liberality of Dr Waxuicu; 
and I find them to accord with the individual here figured, 
except that the back of the fertile frond, below the fructified 
part, is more scaly. Dr Wa.xicu seems to consider the 
P. pertusum of RoxpurGH as the same with P. adnascens 
of Swartz, Synopsis Filic. p. 2. f. 2. That plant, however, 
has much shorter and almost ovate sterile fronds, and fertile | 
fronds more linear and much narrower in their lower half. 
Polypodium pertusum turns almost black in drying. 
Fig. 1. Portion of the frond, shewing the fructification. Fig. 2. One of the 
scales which surround the fructification. Fig. 3. Cluster of capsules, 
with some of its surrounding scales. Fig. 4. Capsules, separated from — 
the cluster. Fig. 5. Scale from the sterile frond.—All more or less mags 
nified. | : ) | 
