226 BOTANY OF VAN DIEMEN’S LAND. 
pect of the hills, etc., as that of the marine flora. Everything that 
grows at Georgetown (as at Bantry) is of a huge size; the leaves ex- 
travagantly broad of the leafy kinds, and the stems of the branching 
ones proportionably long. The Dasye are commonly two to three feet 
long ; so is Polysiphonia Hookeri, and even longer. I have seen bunches 
of Griffithsia setacea nearly two feet long, G. corallina almost as large, 
and Callithamnia which might be laid out so as to cover a large sheet 
of cartridge paper. From a single plant of Laurencia dasyphylla I made 
thirty or forty good-sized specimens; each secondary branch being 
sufficient for a folio sheet: no paper would have been large enough 
to lay down the specimen entire. The same luxuriance distinguishes 
most others. I have not myself gathered Martensia, but Mr. Gunn 
has fragments of its fringe (without the membrane) which indicate that 
the perfect specimens must have been at least a foot in diameter. lt 
appears to be very rare, as he only once found it, and Mr. Fereday 
only once; and both were after gales some years ago. Claudea seems 
to be pretty generally distributed through the estuary, though very 
rare, except in one or two places where it is abundantly cast up; I 
have not found it growing. The best locality for it is at Point Rapid, 
about ten or twelve miles higher up the river than Georgetown. I call 
it river, but the water is perfectly salt for upwards of thirty miles, and 
in many places very deep; and to this depth of water, and the quiet 
shelter which the plants enjoy, are no doubt to be attributed the ex- 
traordinary luxuriance which they attain. My Georgetown collection 
is considerable, but does not include many new species: however, the 
specimens are greatly better than any we have yet received from these 
parts. 
ts The neighbourhood of Georgetown two months earlier in the year 
. would have afforded many flowering plants; most had however passed 
. flowering, and my time was too much occupied with Algw to seek 
closely after those that remained, which I thought the less necessary 
as no doubt Gunn has already sent them all home. Most of my 
excursions were in boats to different points of the river, where We 
_ had barely time to remain to collect Alg before the tide changed; the 
tides being very strong in the river, and in some places perfect races. 
. We took one land excursion however, a walk of about nine or ten miles 
_ to a promontory called “ Five Mile Bluff,” on the north-east coast, the 
_ track going partly through a thin gum-tree forest and partly over à 
