i ’ :
p ie r is , B lume, E num. Pl. Javæ et Insularum adjacentium, Fase. 2 . p. 135 ; and it seems to have been
found in Java both by Dr. Horsfield and Dr . Blum e. It has n o characters by which it may be
distinguished from Pobjpodium as a genus ; and that o f Reinwardfs D ip te r is was simply “ Capsulæ
in disco froudis sparsæ solitariæ aut confertæ. Indusium nullum.” As a species, it difters from
P . TFallichii in its strongly-serrated fronds, which are glaucous on th e underside, and have the
primary nerves throwing ou t branches, after th ey have attained to the segments, and consequently
several parallel nerves arc seen within each division o f the frond ; whereas, in P . WalHchii, the
fo rk in g always commences below the base o f each division or segment, and a pair o f strong nerves
run through its len g th , uniting again ju st b e low the apex. Th e lesser nervation is the same in
h o th , and h igh ly curious. From the main nerves there branch o ff at equal distance and at r ight
angles, many strong vesse ls, h ere and there united by transverse bars in the m iddle part o f the frond,
or between the principal nerves ; the lateral one s do n o t reach th e margin, but are connected by a
waved longitudinal line , a little within the margin. Thus, th e se form transversely-oblong and very
conspicuous reticulations, within which are somewhat four-sided reticulations, which are also, particularly
on the underside, conspicuous to the naked e y e : these, again, bear within their areolæ
smaller and more irregular me she s, and within th ese , if a g ood lens be employed, espec ially if the
frond be held up between the eye and the ligh t, the ultimate reticulations may be seen, exc essively
minute, and resembling scmipellucid points.
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