
          Diemen's land Cladoniae resemble our forms + are present varieties of
some of our species but the most have a different habit, + (particularly
24, 20, 21, 24a)) seem to belong to a section of the genus which is not 
represented either in our Flora (as yet) or in that of the North of Europe.
Perhaps also the very curious C. retispora is one of these forms.
I have not succeeded in finding these described in Sprengel's Syst. which
is the latest authority I have here - but shall endeavour when I 
go in town to look further. The habit of this group is very much that
of the caespitose Cetrariae + some of them resemble very much (at 
glance) specimens of C. islandica. And they appear almost equally
cartilaginous.
And now I have to thank you for affording me this delightful
+ instructive exercise. If you find I am correct in general
in these conclusions I trust you may be induced at some other
time to give me another opportunity. But Van Diemen's Land pl[?]
do not come along every day. In this branch as in every other it
is only the fact that your specimens are the very jewels of my
collection: + therefor it is not wonderful that I should be
desirous of acquiring as many as may be. I shall prepare this
winter a continuation of my article on N. Eng. Lichens containing
as I am now sure, some very interesting forms, the discoveries of
the past season. If this winter is open, I anticipate also collec-
ting considerably. With nothing to take off the attention I have
found the winter by far the best season for collecting lichens.
I shall pay particular attention to the crustaceous rupicolae, of which
I have less than of any other branch. Also I want nothing now but
        