n a large tract of country, it may be inquired, how
far these facts might, when applied to other parallels, identify a
certain portion of the Flora of the interior, and that of the sea-coast
in the same latitude; or, in other terms, how far the botany of the coast
indicates the general feature of the vegetation to a certain limit, in
the interior on the same parallel? Favourable opportunities were afforded
me, to compare the vegetation of opposite coasts within the tropic, at
the eastern and western extremes of a particular parallel; and the
results of such a comparison identified many species on the two coasts. I
have annexed a list of those plants that are common to the North-west and
East Coasts in and about the parallel of 15 degrees South, from a
contemplation of which, together with the above remarks, and a further
comparison of the species with those of the shores of the Gulf of
Carpentaria, through which that degree of latitude passes, might not a
general idea of some portion of the Flora of the expanse of intermediate
interior (far beyond the reach of actual investigation) be presumed?

A few observations relative to the geographical range of certain genera
and species, hitherto considerably circumscribed, will close this notice.

The genus Pandanus has ever been viewed by botanists as equinoctial; nor
was it till recently ascertained satisfactorily, that one of its species
(P. pedunculatus, Brown) exists on the shores of Port Macquarie in New
South Wales, in latitude 31 degrees South: and I have been credibly
informed, that the same plant is frequent in the vicinity of Port
Stephens, which is at least a degree to the southward of the above
parallel. The latitude of 32 degrees South may be considered the utmost
extreme of ranges from the equator of the genus in Terra Australis, on
the opposite shore of which, as also in all other countries, it has not
been remarked beyond the tropics.

The palms of Terra Australis, which (as previously observed) are
remarkably limited on the north-western shores, have a very considerable
diffusion on the North and East Coasts, and have even a more general
dispersion on the latter shores, than has been allowed them formerly.
Seaforthia is frequent in dense forests on the East Coast, almost to
latitude 35 degrees South, where it exhibits all the tropical habits
assumed on the northern shores, although the difference of climate, and
consequent temperature, are abundantly obvious.